UNIT I DC MACHINES

Three phase circuits, a review. Construction of DC machines –Theory of operation of DC

generators –Characteristics of DC generators–Operating principle of DC motors –Types of

DC motors and their characteristics–Speed control of DC motors –Applications.

PART A

Q.No. Questions BTL

Level

Domain

1. List the types of DC Motors. Give any difference between them. BTL 1 Remembering

2. Name the different methods of excitation of generator? BTL 1 Remembering

3. Quote (i) Faraday’s law of Electro magnetic Induction (ii) Lenz

Law.

BTL 1 Remembering

4. Define the terms (i) Electric Motor (ii) Electric Generator. BTL 1 Remembering

5. Tell the different techniques used for the speed control of DC

Series Motor?

BTL 1 Remembering

6. Examine the main elements of a DC Machine? BTL 1 Remembering

7. Express the formula for the armature torque produced by the motor

for DC Series Motor and DC Shunt Motor.

BTL 2 Understanding

8. Summarize the different characteristics of DC Generator. BTL 2 Understanding

9. Predict the formulae for the voltage equation of a DC Motor. BTL 2 Understanding

10. Discuss the formulae for the generated emf of a DC Generator. BTL 2 Understanding

11. A 200V DC motor has an armature resistance of 0.06Ω and series

field resistance 0f 0.04Ω. If the motor input is 20kW, Calculate the

back emf of the motor and power developed in armature.

BTL 3 Applying

12. A DC motor operates from a 240V supply. The armature resistance

is 0.2Ω. Solve and obtain the back emf when the armature current

is 50A.

BTL 3 Applying

13. A 6 pole wave connected armature has 300 conductors and

produces the flux per pole 0.02 Weber. The Generated emf is 600

Volts. Discover the speed of the Generator

BTL 3 Applying

14. Point out how the star connected system is differentiated with delta

systems.

BTL 4 Analyzing

15. In speed control of DC Shunt Motor analyze how the armature

control method is differentiated from field control method.

BTL 4 Analyzing

16. Classify the different method of speed control of DC Shunt motor? BTL 4 Analyzing

17. Summarize the following terms (i) Commutator (ii) Brushes and

Bearing (iii) Magnetic Frame (iv) Pole Core of DC Machine.

BTL 5 Evaluating

18. Explain the significance of back e.m.f in Motor? BTL 5 Evaluating

19. Compose any two applications of DC Shunt Motor and Series

Motor.

BTL 6 Creating

20. Develop the open circuit characteristics of DC Generator. BTL 6 Creating

PART – B

1. (i)With neat diagram describe the construction and working of DC

Generator. (7)

(ii) Examine the theory and principle of operation of a DC

Generator. (6)

BTL 1 Remembering

2. Quote the following characteristics of DC Generator and explain

each (i) Open Circuit Characteristics (i) Internal Characteristics (iii)

External Characteristics. (13)

BTL 1 Remembering

3. (i) Describe the speed control of DC series motor by flux control

technique. (7)

(ii) Explain the Ward Leonard Method for the speed control of DC

Motor. (6)

BTL 1 Remembering

4. (i) A separately excited Dc generator running at 1000rpm supplied

110A at 220V to a resistive load. If the load resistance remains

constant, what will the load current if the speed is reduced to

800rpm? Armature resistance is 0.02Ω. Field current is unaltered.

Assume a voltage drop of 1V per brush. Ignore the effect of

armature reaction. (7)

(ii) Briefly explain the load characteristics of different types DC

Generator (i) DC Series Generator (ii) DC Shunt Generator (iii) DC

Compound Generator. (6)

BTL 1 Remembering

5. A 250 V Shunt motor takes the total current of 20 A. The shunt field

and armature resistances of 200 Ω and 0.3 ohm respectively.

Estimate (i) Value of back emf (ii) Gross mechanical power in

armature. (13)

BTL 2 Understanding

6. The armature of a 6-pole, 600 rpm lap wound generator has 90

slots. If each coil has 4-turns. Estimate the flux per pole required to

generate emf of 288 Volts. (13)

BTL 2 Understanding

7. Estimate the emf generated by 4-pole wave wound generator having

65 slots with 12 conductors per slot when driven at 1200 rpm. The

flux per pole is 0.02 Weber. (13)

BTL 2 Understanding

8. How the DC Motor can be classified ? Illustrate the following types

of motors (i) DC Series Motor (ii) DC Shunt Motor (iii) DC

Compound Motor. And also write the voltage equation and also

applications of each. (13)

BTL 2 Understanding

9. (i) Demonstrate the principle of operation of DC Motor. And also

explain (i) Faraday’s law of Electro Magnetic Induction (ii)

Fleming’s Left Hand Rule (iii) Force Equation (iv) Back emf. (13)

BTL 3 Applying

10. Differentiate the following methods for the speed control of DC

Motor (i) Armature Control Method (7)

(ii) Field Control Method. (6)

BTL 4 Analyzing

11. With a neat sketch, explain the construction and working of DC

Motor and also explain each parts. (13)

BTL 4 Analyzing

12. In three phase circuit analyze how the star connection is

differentiated with the delta connection and explain with suitable

diagram. (13)

BTL 4 Analyzing

13. (i) Evaluate the emf equation of DC generator. (7)

(ii)Summarize from the first principle an expression for the torque

developed in DC motor. (6)

BTL 5 Evaluating

14. Compose the following characteristics (i) Speed versus Torque (ii)

Torque versus Current (iii) Speed versus Current for the following

motors such as, DC Series Motor, DC Shunt Motor, DC Compound

Motor. (13)

BTL 6 Creating

PART – C

1. Create the circuit for the speed control of DC Series and Shunt

Motor and also sketch the output plot for

(i) Flux Control Method

(ii) Armature Control Method

(iii) Voltage Control Method. (15)

BTL 6 Creating

2. In detail explain about the classification of DC generator with

necessary circuit diagram. Arrive at voltage and current relationship

for each type (15)

BTL 5 Evaluating

UNIT II TRANSFORMERS

Introduction –Single phase transformer construction and principle of operation –EMF equation of

transformer –Transformer no-load phasor diagram –Transformer on-load phasor diagram–Equivalent circuit

of transformer–Regulation of transformer–Transformer losses and efficiency–All day efficiency–auto

transformers.

PART A

Q.No. Questions BTL

Level

Domain

1. List out any four applications of transformers. BTL 1 Remembering

2. Define regulation in a transformer. BTL 1 Remembering

3. Quote the term Efficiency of a transformer. BTL 1 Remembering

4. Describe the voltage transformation ratio equation for (i) Step up

Transformer (ii) Step down Transformer.

BTL 1 Remembering

5. Examine how the Efficiency is distinguished with the All Day

Efficiency of a transformer.

BTL 1 Remembering

6. Identify the reason for transformer is rated in kVA instead of kW?

BTL 1 Remembering

7. What is meant by transformer ? With suitable diagram give the different

elements of single phase transformer.

BTL 2 Understanding

8. Distinguish between core and shell type transformer. BTL 2 Understanding

9. A 1Φ auto transformer has a voltage ratio 320V:250V and supplies a

load of 20kV at 250V. Assuming an ideal transformer, estimate the

current in each section of winding (primary and secondary) and the

current in the common part of the windings.

BTL 2 Understanding

10. Differentiate an ideal transformer with a practical transformer. BTL 2 Understanding

11. Sketch and show the no load phasor diagram of a transformer. BTL 3 Applying

12. Classify the different types of transformer. BTL 3 Applying

13. Illustrate the terms (i) Primary winding (ii) Secondary winding (iii)

Laminated core (iv) leakage flux.

BTL 3 Applying

14. Point out the purpose of laminating the core in a transformer? BTL 4 Analyzing

15. Analyze how the auto transformer is distinguished with ordinary

transformer?

BTL 4 Analyzing

16. Differentiate the following losses occurs in transformer (i) Core or Iron

Loss (ii) Copper Loss.

BTL 4 Analyzing

17. Summarize the advantages and applications of auto transformer? BTL 5 Evaluating

18. Explain the term transformer? How the Faraday’s law of

Electromagnetic induction is applicable.

BTL 5 Evaluating

19. Create the equivalent circuit of a transformer. BTL 6 Creating

20. Formulate the formula for the emf equation of a transformer. BTL 6 Creating

PART – B

1. Draw the basic circuit diagram for single phase transformer and also

describe the principle, construction, working of it. (13)

BTL 1 Remembering

2. (i)Draw the basic circuit diagram for single phase transformer and also

describe the types. (7)

(ii) The Primary and secondary voltages of a 25KVA power transformer

are 2200V and 220V respectively. The transformer has 56 turns in the

secondary. Calculate the number of turns in the primary. (6)

BTL 3 Applying

3. (i) Derive and examine EMF Equation of transformer and express each

terms. (6)

(ii) In core type transformer, the no load voltage rate of 5000/250 V and

frequency 50 Hz . Calculate number of turn in each winding and the flux

is about 0.05 Weber. (7)

BTL 3 Applying

4. A 100kVA, 3300 V/240 V, 50 HZ the single phase transformer has 990

turns on the primary. Identify the number of turns on secondary and the

approximate value of primary and secondary full load currents. (13)

BTL 1 Remembering

5. With necessary vector diagrams, discuss about transformer on no-load

and loaded conditions. (13)

BTL 2 Understanding

6. Describe the principle of operation of a transformer. Draw the vector

diagram to represent the transformer a load at UPF, Lagging and

Leading power factor. (13)

BTL 1 Remembering

7. Summarize the following terms

(i) Transformer losses and efficiency. (6)

(ii) Explain the working of auto transformer. (7)

BTL 2 Understanding

8. Draw the approximate equivalent circuit of Single Phase Transformer

and also analyze the various parameters. (13)

BTL 4 Analyzing

9. (i) From first principles, derive the emf equation of a transformer. Also

show that the voltage induced per turn is the same, whether it is primary

or secondary. (6)

(ii) A single phase transformer with a ratio of 6.6 kV / 415V takes a no-

load current of 0.75 A at 0.22 p.f. If the secondary supplies a current of

120 A at 0.8 p.f. Estimate the total current taken by the primary. (7)

BTL 2 Understanding

10. (i) A 20kVA1φ transformer designed for 2000/200V has the following

constant: R1=2.5Ω, X1=8Ω, R2= 0.04Ω and X2=0.07Ω. Calculate the

approximate value of the secondary terminal voltage and % regulation at

full load and 0.8 p.f. lagging when primary applied voltage is 2000V. (6)

(ii) Calculate all day efficiency of a transformer having maximum

efficiency of 98% at 15kVA at unity power and loaded as follows:

12 hours – 2kW at 0.5 p.f. lag

6 hours – 12kW at 0.8p.f. lag

6 hours – at no load (7)

BTL 3

Applying

11. A 400 kVA transformer has a primary winding resistance of 0.5Ω and a

secondary winding resistance of 0.001Ω. The iron loss is 2.5 kW and the

primary and secondary voltages are 5 kV and 320 V respectively. If the

power factor of the load is 0.85, Point out the efficiency of the

transformer(i) on full load and (ii) on half load. (13)

BTL 4 Analyzing

12. What is meant by auto transformer? Explain the principle, construction,

working of a auto transformer. And also explain (i) Step up auto

transformer (ii) Step down auto transformer. (13)

BTL 4 Analyzing

13. (i) Evaluate the expression for the equivalent circuit of the single phase

transformer. (6)

(ii)Consider A 1100/110V, 22kVA 1φ transformer has primary

resistance and reactance 2Ω and 5Ω respectively. The secondary

resistance and reactance are 0.02Ω and 0.045Ω respectively. Calculate

(1) Equivalent resistance and reactance of secondary referred to primary.

(2) Total resistance and reactance referred to primary. (3) Equivalent

resistance and reactance of primary referred to secondary. (4) Total

resistance and reactance referred to secondary. (5) Total copper loss. (7)

BTL 5 Evaluating

14. Compose the following terms

(i) Losses occurs in a transformer (8)

(ii) Condition for maximum efficiency. (5)

BTL 6 Creating

PART C

1. In Single Phase Transformer (i) Deduce the EMF Equation of

Transformer. (ii) Conduct the experiment how the transformer can be

operated with on load and no load with suitable phasor diagram. (15)

BTL 5 Evaluating

2. Create the circuit for autotransformer for (i) Step up transformer (ii) Step

down transformer. And also explain the construction, principle and

working of it. And also write the merits and demerits of it. (15)

BTL 6 Creating

UNIT III INDUCTION MACHINES AND SYNCHRONOUS MACHINES

Principle of operation of three phase induction motors –Construction–Types -–Equivalent circuit –

Construction of single phase induction motors –Types of single phase induction motors –Double

revolving field theory–starting methods -Principles of alternator –Construction details–Types–Equation

of induced EMF –Voltage regulation. Methods of starting of synchronous motors – Torque equation–

V curves –Synchronous motors.

PART A

Q.No. Questions BTL

Level

Domain

1. List the characteristic features of synchronous motor. BTL 1 Remembering

2. Tell the principle and operation of 3ϕ induction motor. BTL 1 Remembering

3. Name the different types of alternators. BTL 1 Remembering

4. Define the following terms (i) Synchronous speed (ii)Slip (iii)

Frequency of rotor current of an induction motor.

BTL 1 Remembering

5. Quote the term voltage regulation of an alternator. BTL 1 Remembering

6. Describe double field revolving theory. BTL 1 Remembering

7. Differentiate slip ring with squirrel cage type rotor in 3-phase

induction motor.

BTL 2 Understanding

8. Give any three types of 1Φ induction motors based on method of

starting.

BTL 2 Understanding

9. Summarize causes of faulty starting of a synchronous motor?

BTL 2 Understanding

10. Express the relationship between speed and frequency. BTL 2 Understanding

11. A 3Φ 2pole motor is to have a synchronous speed of 6000

rev/min. Solve and find the frequency of the supply voltage.

BTL 3 Applying

12. A 3Φ 4 pole motor is to have a synchronous speed of 2500 rpm.

Calculate the frequency of the supply voltage.

BTL 3 Applying

13. Sketch and explain the torque-speed curve of three phase

induction motor.

BTL 4 Analyzing

14. Illustrate V curves of a synchronous motor. BTL 3 Applying

15. Infer-“1Φ induction motors are not self-starting” BTL 4 Analyzing

16. Estimate the speed at which a 6 pole alternator is to be driven to

obtain the frequency of emf induced to be 50Hz.

BTL 4 Analyzing

17. Support – “induction motor cannot run at synchronous speed”

BTL 5 Evaluating

18. Recommend the starting methods of synchronous motors? BTL 5 Evaluating

19. Formulate the emf equation of an alternator. BTL 6 Creating

20. Develop the equivalent circuit of 3Φ induction motor. BTL 6 Creating

PART – B

1. Quote Double revolving field theory how it is applicable

for a Single phase Induction Motor. (13)

BTL 1 Remembering

2. With neat sketch, tell the principle, construction, working

with the different types of a three phase alternator. (13)

BTL 1 Remembering

3. Identify why the 1Φ motor is not self starting and explain the

types of 1Φ Induction motors. (13)

BTL 1 Remembering

4. Sketch the Equivalent circuit diagram for a three phase Induction

Motor and at any slip. And also examine the (i) Equivalent

circuit of the rotor (ii) Transformer Equivalent circuit for the

Induction Motor. (13)

BTL 1 Remembering

5. (i) Give the constructional details of rotor of both salient pole

and cylindrical rotor synchronous machines. (6)

(ii) Describe the working principle of synchronous motor and

also explain any two methods of starting synchronous motor. (7)

BTL 2 Understanding

6. Summarize the following methods:

(i) EMF method of finding regulation of an alternator. (6)

(ii) MMF method of determining regulation of an alternator. (7)

BTL 2 Understanding

7. In synchronous Motor distinguish the following terms

(i) Torque Equation (6)

(ii) V-Curve Characteristics. (7)

BTL 2 Understanding

8. (i) A 6 pole, 3Φ 50 Hz induction motor develops a maximum

torque of 30Nm at 960 rpm. Solve and find the torque exerted by

the motor at 5% slip. The motor resistance per phase is 0.6Ω. (6)

(ii) Derive the emf equation of an alternator. Examine the effect

of winding factor on the induced emf. (7)

BTL 3 Applying

9. A 500kVA, 3.3kV, 3Φ star connected alternator is found to give

a short circuit current of 290A at normal field current. Its

effective winding resistance per phase is 0.7Ω. Calculate the full

load of voltage regulation by EMF method for 0.8pf lagging.(13)

BTL 3 Applying

10. (i) Explain double field revolving theory of single phase

Induction Motor. (6)

(ii) Explain the working of split phase capacitor start motor. (7)

BTL 4 Analyzing

11. In synchronous motor point out the following term

(i) Torque Equation (6)

(ii) V-Curve Characteristics. (7)

BTL 4 Analyzing

12. Analyze the construction and working principle of 3Φ induction

motors? Mention the advantages and disadvantages of it. (13)

BTL 4 Analyzing

13. Summarize the following types of alternator (i) Salient pole type

(ii) Non-salient pole type. (13)

BTL 5 Evaluating

14. Compose short notes on the following:

(i) Torque developed by an induction motor. (6)

(ii) Making 1Φ induction motor self starting. (7)

BTL 6 Creating

PART C

1. Judge and explain the following types of Three phase Induction

Motor with suitable diagram (i) Squirrel Cage Type Induction

Motor (ii) Phase wound or Split phase Induction Motor. (15)

BTL 5 Evaluating

2. Create the starting method circuit for Single phase Induction

Motor (i) Split phase Induction Motor (ii) Capacitor Start Type

Induction Motor (iii) Shaded Pole type Induction Motor. And

also draw the circuit for Torque versus Speed characteristic.

Mention the applications of it. (15)

BTL 6 Creating

UNIT IV BASICS OF MEASUREMENT AND INSTRUMENTATION

Static and Dynamic Characteristics of Measurement –Errors in Measurement -Classification of

Transducers –Variable resistive –Strain guage, thermistor, RTD Transducer -Variable Capacitive

Transducer -Capacitor Microphone-Piezo Electric Transducer –Variable Inductive transducer –LVDT,

RVDT

PART A

Q.No. Questions BTL

Level

Domain

1. What is a transducer? Classify transducers different types.

BTL 4 Analyzing

2. Express the term piezo electric effect?

BTL 2 Understanding

3. Define the term accuracy and precision. BTL 1 Remembering

4. Compare the features of resistance thermometer with thermistor.

BTL 5 Evaluating

5. Quote rite the need of calibration. BTL 1 Remembering

6. Explain the active and passive transducers? BTL 5 Evaluating

7. Demonstrate the term ’errors’ in measurement. BTL 3 Applying

8. Express any one method to increase the sensitivity of capacitive

transducer.

BTL 2 Understanding

9. Illustrate the broad classification of transducers. BTL 3 Applying

10. List any 4-dynamic characteristics of measurement system.

BTL 1 Remembering

11. Quote the term precision and resolution. BTL 1 Remembering

12. Relate the important merits and limitations of thermistors.

BTL 3 Applying

13. Discuss the principle of Piezo-resistive sensor. BTL 2 Understanding

14. Draw and explain the equivalent circuit for LVDT.

BTL 4 Analyzing

15. Point out the criteria for the transducer selection for different

applications.

BTL 4 Analyzing

16. Create the expression and factors deciding gauge factor of strain

gauge.

BTL 6 Creating

17. What is meant by Potentio meter? Formulate the formula for

linear and angular potentio meter.

BTL 6 Creating

18. Tell any 4-static analysis of measurement system.

BTL 1 Remembering

19. Summarise the term piezo electric effect? List any 4-materials

produce Piezo electric effect.

BTL 2 Understanding

20. Describe the following static characteristics of measurement

system (i) Range ability (ii) Span (iii) Static Sensitivity (iv) Static

Error.

BTL 1 Remembering

PART – B

1. Define the following static characteristics:

1. Static sensitivity

2. Linearity

3. Precision

4. Accuracy

5.Threshold (13)

BTL 1 Remembering

2. (i) Analyze the construction and principle, working of a LVDT.

How the magnitude and direction of the displacement of core of

LVDT detected? (13)

BTL 4 Analyzing

3. Illustrate the working and construction of RTD. Describe the

materials used for RTD along with their properties and also write

the advantages, disadvantages of it. (13)

BTL 3 Applying

4. (i) Compare the different error in measurement system. (6)

(ii)Explain the causes and methods to minimize different types of

errors. (7)

BTL 5 Evaluating

5. Distinguish the working of the following sentences.

(i) Strain Gauge (6)

(ii) Thermistor (7)

BTL 2 Understanding

6. Summarize the operation of

(i) Capacitor Microphone (6)

(ii) Piezo Electric Transducer (7)

BTL 2 Understanding

7. (i) List the merits, demerits and typical applications for capacitive

transducer. (6)

(ii) Describe the functioning of capacitor micro phone. (7)

BTL 1 Remembering

8. (i) Examine the operation, Equivalent circuit and transfer function

for LVDT. (6)

(ii) And also identify the merits, demerits and applications of

LVDT. (7)

BTL 1 Remembering

9. What is meant by piezo resistive effect? Formulate the expression

for gauge factor. And also explain the different types of strain

gauges. (13)

BTL 6 Creating

10. Differentiate the following types of systematic error (i) Instrumental

error (ii) Environmental Error (iii) Parallax Error. (13)

BTL 2 Understanding

11. Classify the following types of transducer with an example

(i) Active and Passive Transducer

(ii) Primary and Secondary Transducer

(iii) Analog and Digital Transducer

(iv) Transducer and Inverse Transducer. (13)

BTL 3 Applying

12. What is meant by Dynamic Characteristics of Measurement

System? Quote and explain the following dynamic characteristics

(i) Speed of Response (ii) Measurement lag (iii) Fidelity (iv)

Dynamic Error. (13)

BTL 1 Remembering

13. Analyze the following types of Capacitive Transducer

(i) Parallel Plate type capacitor

(ii) Cylindrical type capacitor

(iii) Angular displacement type capacitive transducer

(iv)Capacitor Micro Phone. (13)

BTL 4 Analyzing

14. What is Piezo electric effect? Obtain the expression for output

voltage and equivalent circuit of Piezo electric crystal. And point

out the advantages, disadvantages and application it. (13)

BTL 4 Analyzing

PART – C

1. Judge and Explain the following resistive transducers (i) Strain

Gauge (ii) RTD (iii) Thermistor. (15)

BTL 5 Evaluating

2. Create the circuit and explain the following instruments (i)

Capacitor Microphone for Sound measurement. (ii) LVDT for

Linear displacement measurement. (iii) RVDT for Angular

displacement measurement. (15)

BTL 6 Creating

UNIT V ANALOG AND DIGITAL INSTRUMENTS

DVM, DMM –Storage Oscilloscope. Comparison of Analog and Digital Modes of operation, Application

of measurement system, Errors. Measurement of R, L and C, Wheatstone, Kelvin, Maxwell, Anderson,

Schering and Wien bridges Measurement of Inductance, Capacitance, Effective resistance at high

frequency, Q-Meter.

PART A

Q.No. Questions BTL

Level

Domain

1. Compare analog and digital instruments. BTL 4 Analyzing

2. Point out the advantages and disadvantages of Anderson bridge. BTL 4 Analyzing

3. Discuss the working of the ‘Q’-Meter. BTL 2 Understanding

4. Define storage oscilloscope? Mention the different types of

storage oscilloscope.

BTL 1 Remembering

5. List the various detectors used for AC bridges. BTL 1 Remembering

6. Formulate the resolution of Analog to Digital Converter ? BTL 6 Creating

7. Demonstrate the block diagram of digital storage CRO. BTL 3 Applying

8. What is meant by Digital Millimeter? Summarize the advantages

of DVM.

BTL 5 Evaluating

9. Conclude which bridge is used for the measurement of Low,

Medium and High value resistance.

BTL 5 Evaluating

10. What is meant by analog and digital instruments? Give example

for each.

BTL 2 Understanding

11. Name any four different types of Digital Voltmeter. BTL 1 Remembering

12. Draw and illustrate the block diagram of successive

approximation type Digital Volt Meter.

BTL 3 Applying

13. What is meant by bridges? Discuss which types of inputs and

outputs connected with the bridges.

BTL 2 Understanding

14. Point out the advantages of Digital voltmeter compare with

analog voltmeter.

BTL 4 Analyzing

15. Draw and show the block diagram of Ramp type Digital Volt

Meter.

BTL 3 Applying

16. Identify the merits and demerits of Wheat Stone Bridge. BTL 1 Remembering

17. Quote any 4-types of AC Bridges and the quantity being

measured.

BTL 1 Remembering

18. What is the use of schering bridge? Express the formula for

unknown value of capacitance.

BTL 2 Understanding

19. What is meant by Q-Meter? And also draw the circuit diagram for

Q-Meter and formulate the formula for Q-factor.

BTL 6 Creating

20. Tell any 4-applications of Q-Meter. BTL 1 Remembering

PART – B

1. With neat diagram examine the following types of storage

oscilloscope (i) Analog storage oscilloscope (ii) Digital storage

oscilloscope. (13)

BTL 1 Remembering

2. With neat diagram describe the construction and working of

Wien’s bridge for capacitance measurement. (13)

BTL 1 Remembering

3. Explain the construction and working of Digital Multi Meter with

all self diagnostic features. (13)

BTL 4 Analyzing

4. Classify the working of (i) Ramp type Digital voltmeter (ii) Dual

Slope integrating type Digital Voltmeter. (13)

BTL 4 Analyzing

5. (i)Express how the Schering bridge can be used for the

measurement of capacitance explain it. (7)

(ii)Derive the bridge balance equation of Schering Bridge. How it

BTL 2 Understanding

can be used to measure the value of capacitance express it. (6)

6. Quote the following bridges (i)Low value resistance can be

measured by Kelvin’s double Bridge (ii) Medium value resistance

can be measured by Wheat Stone Bridge. (13)

BTL 1 Remembering

7. How the analog instrument is distinguished with digital

instruments explain it. (13)

BTL 2 Understanding

8. Illustrate with the block diagram and explain the following types of

Digital Voltmeter

(i) Successive Approximation type DVM (7)

(ii) Potentiometric type DVM. (6)

BTL 3 Applying

9. Draw the block diagram of Digital Multi Meter. How it can be

used for the measurement of (i) DC Voltage (ii) AC Voltage (iii)

DC Current (iv) AC Current (v) Resistance and also Point out the

advantages of it. (13)

BTL 4 Analyzing

10. Summarize how Wheat stone bridge can be used to measure the

Medium value resistance and also explain with suitable circuit

diagram. (13)

BTL 5 Evaluating

11. How experiment was conducted by Anderson bridge for measuring

the value of Self inductance of the coil. (13)

BTL 3 Applying

12. Create the circuit diagram of Wein’s bridge. How it can be used to

measure the value of frequency explain it. (13)

BTL 6 Creating

13. What is meant by Q-factor of the coil? Draw the circuit diagram of

Q-meter. How it can be used to measure the value of Q-factor of

the coil explain it. List any 4-applications of Q-Meter. (13)

BTL 1 Remembering

14. Draw the block diagram and contrast the following types of Digital

Voltmeter

(i) Successive Approximation Type (6)

(ii) Potentio metric type DVM. (7)

BTL 2 Understanding

PART – C

1. Evaluate the circuit for (i) Ramp Type DVM (ii) Successive

Approximation type DVM (iii) Digital Multi Meter(DMM). (15)

BTL 5 Evaluating

2. Design the circuit for the following bridges with mathematical

expression for (i) Schering Bridge (ii) Wien’s Bridge (iii) Wheat

Stone Bridge. (15)

BTL 6 Creating