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, 2015 | |
| City, State | new delhi, |
Question Paper
1. Write short notes on any two of the following
Damper Windings
Crawling and Cogging
Autotransformer Starter for 3-phase Induction Motor
Discuss the Synchronous Impedance method for determination of voltage regulation of an alternator.
Explain the working of synchronous motor as a synchronous condensor.
Explain the parallel operation of alternators in detail.
A 3-phase, 415 6-pole, 50 Hz, V-connected synchronous motor has an emf of 520 V L). The stator winding has a synchronous reactance of 2 ohm/phase. The motor develops a torque of 220 N-m. Calculate the current drawn from the supply.
Draw and explain the torque-slip characteristic of a 3-phase induction motor for
motoring mode
generating mode
braking mode.
From the Equivalent circuit of a 3-phase induction motor, with neglecting the stator resistance, obtain the relation
I2sT/I2 sqrt(s^2
Explain the speed control methods of polyphase induction motor.
A squirrel cage induction motor has a full load slip of 0·05. The motor starting current at rated voltage is 6 times its full-load current. Find the tapping on the auto-transformer starter which would give full-load torque at start.
Discuss capacitor split-phase starting of a 1-phase induction motor using connection diagram and torque-speed characteristic.
Explain the working principle of Hysteresis motor using B-H characteristic and magnetic field distribution diagram.
Discuss the construction and principle of operation of a stepper motor with suitable diagrams.
Enumerate the merits and demerits of Servo motors.
Damper Windings
Crawling and Cogging
Autotransformer Starter for 3-phase Induction Motor
Discuss the Synchronous Impedance method for determination of voltage regulation of an alternator.
Explain the working of synchronous motor as a synchronous condensor.
Explain the parallel operation of alternators in detail.
A 3-phase, 415 6-pole, 50 Hz, V-connected synchronous motor has an emf of 520 V L). The stator winding has a synchronous reactance of 2 ohm/phase. The motor develops a torque of 220 N-m. Calculate the current drawn from the supply.
Draw and explain the torque-slip characteristic of a 3-phase induction motor for
motoring mode
generating mode
braking mode.
From the Equivalent circuit of a 3-phase induction motor, with neglecting the stator resistance, obtain the relation
I2sT/I2 sqrt(s^2
Explain the speed control methods of polyphase induction motor.
A squirrel cage induction motor has a full load slip of 0·05. The motor starting current at rated voltage is 6 times its full-load current. Find the tapping on the auto-transformer starter which would give full-load torque at start.
Discuss capacitor split-phase starting of a 1-phase induction motor using connection diagram and torque-speed characteristic.
Explain the working principle of Hysteresis motor using B-H characteristic and magnetic field distribution diagram.
Discuss the construction and principle of operation of a stepper motor with suitable diagrams.
Enumerate the merits and demerits of Servo motors.
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