Exam Details
| Subject | Electro Mechanical Energy Conversion - I | |
| Paper | ||
| Exam / Course | B.Tech. VIEP- Electrical Engineering III (BTCSVI/BTECVI/BTELVI) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2015 | |
| City, State | new delhi, |
Question Paper
Explain Electro-mechanical Energy Conversion system with the help of a block diagram.
Discuss briefly about torque production in rotating machine. Also, give examples of singly excited and doubly excited magnetic field system.
Describe the working of a three-point starter for d.c. shunt motor, with the help of a neat diagram.
Compare and distinguish a three-point starter with a four-point starter.
A 500 V series motor takes current of 180 A to develop 80 kW. The armature and series field resistances are 0·1 ohm and 0'04 ohm respectively. If the output is reduced to 40 kW, find the input current and efficiency.
Describe the Ward Leonard method of speed control of d.c. motor.
Draw and explain the phasor diagram of a single phase transformer on inductive load.
A 10 kVA, 400/200 V single-phase 50 Hz transformer has a maximum efficiency of 92% at 80% of full load at unity p.f. Determine the efficiency at full load at 0·8 p.f. lagging.
What is Sumpner's test Draw a circuit diagram to conduct this test and explain its operation.
What is an auto-transformer? Derive an expression for saving of copper, when an auto-transformer is used.
Draw and explain Scott connection of a transformer.
List the advantages and disadvantages of 3-phase transformer.
7. Write short notes on any two of the following:
Voltage Regulation of Transformer
Swinburne's Test
Armature Reaction in DC Machine
Discuss briefly about torque production in rotating machine. Also, give examples of singly excited and doubly excited magnetic field system.
Describe the working of a three-point starter for d.c. shunt motor, with the help of a neat diagram.
Compare and distinguish a three-point starter with a four-point starter.
A 500 V series motor takes current of 180 A to develop 80 kW. The armature and series field resistances are 0·1 ohm and 0'04 ohm respectively. If the output is reduced to 40 kW, find the input current and efficiency.
Describe the Ward Leonard method of speed control of d.c. motor.
Draw and explain the phasor diagram of a single phase transformer on inductive load.
A 10 kVA, 400/200 V single-phase 50 Hz transformer has a maximum efficiency of 92% at 80% of full load at unity p.f. Determine the efficiency at full load at 0·8 p.f. lagging.
What is Sumpner's test Draw a circuit diagram to conduct this test and explain its operation.
What is an auto-transformer? Derive an expression for saving of copper, when an auto-transformer is used.
Draw and explain Scott connection of a transformer.
List the advantages and disadvantages of 3-phase transformer.
7. Write short notes on any two of the following:
Voltage Regulation of Transformer
Swinburne's Test
Armature Reaction in DC Machine
Other Question Papers
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Subjects
- Active Filter Design
- Advanced Control System
- Advanced Power Electronics
- Applied Electromagnetics
- Basics Of Electrical Engineering
- Computer Process Control
- Control System
- Digital Electronics
- Electric Energy Utilization
- Electrical And Electronics Engineering Materials
- Electrical Instrumentation
- Electrical Machine - I
- Electrical Machines - Ii
- Electrical Machines And Electronics
- Electrical Measurements And Measuring Instruments
- Electro Mechanical Energy Conversion - I
- Electro-Mechanical Energy Conversion - Ii
- Electro-Mechanical Energy Conversion-Iii
- Electromagnetic Theory
- Energy Auditing And Analysis
- High Voltage Engineering
- Industrial Drives
- Micro Controllers
- Microprocessor And Applications
- Network Theory
- Power Quality Issues And Remedial Measures
- Power System
- Power System - I
- Stochastic Control Systems
- Switchgear And Protection