Exam Details
| Subject | Industrial Drives | |
| 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
1. What is electric drive system Draw its block diagram and explain its working.
What are the advantages of a.c. drives over d.c. drives?
Explain the various techniques used to control the electric drives.
Draw the speed-torque characteristic of d.c. series motor and also write its expression.
What is chopper fed d.c. drive? Explain with the help of a schematic diagram and waveforms.
4. A 220 d.c. shunt motor takes 50 when giving its rated output at 1500 rpm. Its total resistance is 0·25 Q. Determine the resistance to be added in series with the motor to obtain the rated torque at
starting,
1000 rpm.
5. A 230 V d.c. series motor used in lifts has a resistance of 0·25 Q. It draws 40 A at a speed of 1500 rpm. Assume that the magnetization curve is a straight line between zero and 40 and the flux per pole at 60 A is 20% greater than at 40 A. Determine the resistance to be added in series with the motor for a speed of 3000 rpm at the current of 15 A.
6. Explain the working of Current Source Inverter controlled 3-phase induction motor drive in the schematic, waveform and expressions.
Explain the slip power recovery scheme in a.c. motor drive system.
Draw the speed-torque characteristic of 3-phase induction motor and explain its usefulness in drive application.
8. What is cycloconverter Explain its application in synchronous motor drive with schematic, waveform and expressions.
9. What is brushless d.c. motor How is its speed controlled with various methods
10. Write short notes on any two of the following:
Solar and battery powered drives
Four quadrant operation of d.c. drive
Variable frequency control of synchronous motor
What are the advantages of a.c. drives over d.c. drives?
Explain the various techniques used to control the electric drives.
Draw the speed-torque characteristic of d.c. series motor and also write its expression.
What is chopper fed d.c. drive? Explain with the help of a schematic diagram and waveforms.
4. A 220 d.c. shunt motor takes 50 when giving its rated output at 1500 rpm. Its total resistance is 0·25 Q. Determine the resistance to be added in series with the motor to obtain the rated torque at
starting,
1000 rpm.
5. A 230 V d.c. series motor used in lifts has a resistance of 0·25 Q. It draws 40 A at a speed of 1500 rpm. Assume that the magnetization curve is a straight line between zero and 40 and the flux per pole at 60 A is 20% greater than at 40 A. Determine the resistance to be added in series with the motor for a speed of 3000 rpm at the current of 15 A.
6. Explain the working of Current Source Inverter controlled 3-phase induction motor drive in the schematic, waveform and expressions.
Explain the slip power recovery scheme in a.c. motor drive system.
Draw the speed-torque characteristic of 3-phase induction motor and explain its usefulness in drive application.
8. What is cycloconverter Explain its application in synchronous motor drive with schematic, waveform and expressions.
9. What is brushless d.c. motor How is its speed controlled with various methods
10. Write short notes on any two of the following:
Solar and battery powered drives
Four quadrant operation of d.c. drive
Variable frequency control of synchronous motor
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
- National Centre for Disability Studies (NCDS)
- School of Agriculture (SOA)
- School of Computer and Information Sciences (SOCIS)
- School of Continuing Education (SOCE)
- School of Education (SOE)
- School of Engineering & Technology (SOET)
- School of Extension and Development Studies (SOEDS)
- School of Foreign Languages (SOFL)
- School of Gender Development Studies(SOGDS)
- School of Health Science (SOHS)
- School of Humanities (SOH)
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- School of Journalism and New Media Studies (SOJNMS)
- School of Law (SOL)
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- School of Performing Arts and Visual Arts(SOPVA)
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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