Electrical Machines and Applications | B.E. Semester III Winter 2021 | GTU Papers

Q: Q1. Define the following terms: 1.Pole pitch 2. Coil Pitch. 3. Commutator Pitch

This is question 1 (3 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Q: Q1. List the parts of DC Generator. Explain at least four in brief with necessary diagram and application.

This is question 1 (4 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Q: Q1. Define Generator. Explain the Classification of DC Generator with suitable diagram. Derive EMF equation of DC Generator.

This is question 1 (7 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Q: Q2. Define Pitch Factor and Distribution Factor. Enlist advantage and disadvantages of Short pitch or Fractional pitch Coil.

This is question 2 (3 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Q: Q2. List at differences between Lap and Wave Winding in DC Machine.

This is question 2 (4 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Q: Q2. Draw and Explain Power Flow Diagram for DC Generator and DC Motor.

This is question 2 (7 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Q: Q2. Define Transformer. Explain the Classification of Transformer with Suitable diagram. Derive EMF Equation of Transformer.

This is question 2 (7 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Q: Q3. What is SC Test? Explain the procedure to carry out SC Test.

This is question 3 (3 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Q: Q3. Discuss essential and desirable conditions to be satisfied for parallel operation of two 1-Ø transformers.

This is question 3 (4 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Q: Q3. Explain necessity of starters. Explain 3-point starter for DC shunt motor with neat diagram.

This is question 3 (7 marks) from the GTU Electrical Machines and Applications BE Winter 2021 question paper. Subject code: 3132407.

Questions25

Define the following terms: 1.Pole pitch 2. Coil Pitch. 3. Commutator Pitch

[3 marks]

List the parts of DC Generator. Explain at least four in brief with necessary diagram and application.

[4 marks]

Define Generator. Explain the Classification of DC Generator with suitable diagram. Derive EMF equation of DC Generator.

[7 marks]

Define Pitch Factor and Distribution Factor. Enlist advantage and disadvantages of Short pitch or Fractional pitch Coil.

[3 marks]

List at differences between Lap and Wave Winding in DC Machine.

[4 marks]

Draw and Explain Power Flow Diagram for DC Generator and DC Motor.

[7 marks]

Define Transformer. Explain the Classification of Transformer with Suitable diagram. Derive EMF Equation of Transformer.

[7 marks]

What is SC Test? Explain the procedure to carry out SC Test.

[3 marks]

Discuss essential and desirable conditions to be satisfied for parallel operation of two 1-Ø transformers.

[4 marks]

Explain necessity of starters. Explain 3-point starter for DC shunt motor with neat diagram.

[7 marks]

What is OC Test? Explain the Procedure to Carry out OC Test.

[3 marks]

Draw a no load Phasor diagram of a 1-Ø transformer and explain.

[4 marks]

Classify DC motors with chart. Also explain characteristics of DC shunt motor.

[7 marks]

Explain only constructional difference between squirrel case and wound rotor 3 Ø Induction Motor

[3 marks]

Draw Slip Torque characteristic of 3 phase Induction motor and explain in brief.

[4 marks]

State and Explain Production of Rotating Magnetic Field for 3- Ø Induction motor.1

[7 marks]

What is Linear Induction motor? Explain in brief with its application.

[3 marks]

Derive the torque equation of 3 Ø Induction Motor.

[4 marks]

List the types of Single Phase induction motor. Explain the operational principal of any one split phase induction motor with necessary sketch and vector diagram.

[7 marks]

Derive the EMF equation of an alternator.

[3 marks]

Explain the construction and working of Repulsion motor.

[4 marks]

Mention the methods of determination of voltage regulation of an alternator. Describe the Synchronous impedance (EMF) method in detail.

[7 marks]

Why synchronous motor is not self starting? Describe in brief.

[3 marks]

Explain the construction and working of Stepper motor.

[4 marks]

What is synchronization? Explain two bright one dark lamp method and all dark lamp method of synchronization in brief.

[7 marks]

Electrical Machines and Applications — Winter 2021

Questions25