Exam Details
| Subject | E l e c t r i c a l M a c h i n e T h e o r y I I | |
| Paper | ||
| Exam / Course | Diploma -VIEP-Electrical Engineering (DELVI)/Advanced Level Certificate Course In Electrical Engineering (ACELVI) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages: 3 IBIEE-02SI
DIPLOMA IN ELECTRICAL ENGINEERING
(DELVI) I ADVANCED LEVEL CERTIFICATE
COURSE IN ELECTRICAL ENGINEERING
(ACELVI)
Term-End Examination
June, 2016
tJU3BS
BIEE-028 ELECTRICAL MACHINES THEORY -II
Time hours Maximum Marks: 70
Note: Attempt any five questions. All questions carry equal marks. Use of scientific calculators is permitted.
1. Explain the principle of operation of the three-phase induction motor. 7
State the effects of increasing rotor resistance on starting torque and maximum torque of a three-phase induction motor. 7
2. What are the functions of a starter in induction motor Explain the construction and working of DOL starter.
In a 6-pole, 3-phase, 50 Hz induction motor with star-connected rotor, the rotor resistance per phase is 0·3 the reactance at standstill is 1·5 n per phase, and e.m.f. between the slip rings on open circuit is 175 V. Find: 7
Slip at a speed of 950 r.p.m.
Rotor e.m.f. per phase.
Rotor frequency and reactance at a speed of 950 r.p.m.
3. Give reasons for the following: 7
Generally cylindrical rotor construction is used for high speed and salient pole construction for low speed synchronous machines.
The speed of a synchronous generator should be kept constant at synchronous speed.
What is the necessity of parallel operation of alternators State the conditions for parallel operation of alternators. 7
4. Explain the differences between a synchronous motor and an induction motor in detail. 7
Explain the purpose of using damper windings in a synchronous machine. 7
5. Write short notes on any two of the following: 2x3
Crawling and Cogging
V-curves of Synchronous Motor
Synchronous Condenser
Explain the construction, operation and characteristic of split phase induction motor. 7
6. Describe the construction and operation of a shaded pole induction motor. 7
What is a stepper motor Enumerate its advantages and applications. 7
7. Describe the constructional details of linear induction motor. 7
Discus the merits and demerits of servo motors. 7
DIPLOMA IN ELECTRICAL ENGINEERING
(DELVI) I ADVANCED LEVEL CERTIFICATE
COURSE IN ELECTRICAL ENGINEERING
(ACELVI)
Term-End Examination
June, 2016
tJU3BS
BIEE-028 ELECTRICAL MACHINES THEORY -II
Time hours Maximum Marks: 70
Note: Attempt any five questions. All questions carry equal marks. Use of scientific calculators is permitted.
1. Explain the principle of operation of the three-phase induction motor. 7
State the effects of increasing rotor resistance on starting torque and maximum torque of a three-phase induction motor. 7
2. What are the functions of a starter in induction motor Explain the construction and working of DOL starter.
In a 6-pole, 3-phase, 50 Hz induction motor with star-connected rotor, the rotor resistance per phase is 0·3 the reactance at standstill is 1·5 n per phase, and e.m.f. between the slip rings on open circuit is 175 V. Find: 7
Slip at a speed of 950 r.p.m.
Rotor e.m.f. per phase.
Rotor frequency and reactance at a speed of 950 r.p.m.
3. Give reasons for the following: 7
Generally cylindrical rotor construction is used for high speed and salient pole construction for low speed synchronous machines.
The speed of a synchronous generator should be kept constant at synchronous speed.
What is the necessity of parallel operation of alternators State the conditions for parallel operation of alternators. 7
4. Explain the differences between a synchronous motor and an induction motor in detail. 7
Explain the purpose of using damper windings in a synchronous machine. 7
5. Write short notes on any two of the following: 2x3
Crawling and Cogging
V-curves of Synchronous Motor
Synchronous Condenser
Explain the construction, operation and characteristic of split phase induction motor. 7
6. Describe the construction and operation of a shaded pole induction motor. 7
What is a stepper motor Enumerate its advantages and applications. 7
7. Describe the constructional details of linear induction motor. 7
Discus the merits and demerits of servo motors. 7
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)
- School of Interdisciplinary and Trans-Disciplinary Studies (SOITDS)
- School of Journalism and New Media Studies (SOJNMS)
- School of Law (SOL)
- School of Management Studies (SOMS)
- School of Performing Arts and Visual Arts (SOPVA)
- School of Performing Arts and Visual Arts(SOPVA)
- School of Sciences (SOS)
- School of Social Sciences (SOSS)
- School of Social Work (SOSW)
- School of Tourism & Hospitality Service Sectoral SOMS (SOTHSM)
- School of Tourism &Hospitality Service Sectoral SOMS (SOTHSSM)
- School of Translation Studies and Training (SOTST)
- School of Vocational Education and Training (SOVET)
- Staff Training & Research in Distance Education (STRIDE)
Subjects
- Basics of Electrical Engineering
- C - Programming
- Computer Applications In P.S.
- Control Systems
- Digital Control System
- Digital Control System Design
- Dynamics System Simulation
- Electrical Circuit Theory
- Electrical Engineering Material
- Electrical Installation and System
- E l e c t r i c a l M a c h i n e T h e o r y I I
- Electrical Machines-I
- Electrical Measurements And Instruments
- Electrical Power Transmission and Distribution
- Energy Audit
- Flexible Ac Transmission System
- Industrial Drives and Controls
- Mechatronics
- Power Generation System
- Power Plant Economics And Centering
- Power System Reliability
- Principles of Computer Architecture
- Special Electrical Machines
- Switchgear And Protection
- Utilization Of Electrical Engineering