Exam Details
| Subject | Power System | |
| 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
Discuss the advantages of Per Unit system.
Derive an expression for
Z(ohm) x (MVA)Base/(kv)Base^2
Obtain the per unit (reactance) diagram of the power system.
Generator No.1: 50 MVA, 10.5 kV, X" =1·45 ohm, Xn2 =0·5 ohm
Generator No.2: 20 MVA, 6·6 kV, X" =1·23 ohm, Xn2 =0.5 ohm
Transformer T1 (3-phase) 20 MVA, 33/11 kV, 15·23 ohm per phase on high tension side.
Transformer T2 (3-phase) 20 MVA, 33/6·2 kV, X 16·17 ohm per phase on high tension side.
Transmission line: 22·5 ohm/phase.
2. Mention two objectives of short circuit analysis. Deduce and draw the sequence network for a line to ground fault at the terminals of an unloaded generator.
3. Why is the load flow study required? Explain the Newton-Raphson method and its advantages over the Gauss-Siedel method.
Explain the application of equal area criterion to study the transient stability for a sustained line fault.
Discuss the factors affecting the transient stability. How can the transient stability be improved?
Explain Bewley's lattice diagram.
Determine the reflection and refraction coefficient for a short circuit transmission line.
With the help of equal area criterion, explain how the automatic reclosing circuit breaker and turbine fast valving help to improve the system stability.
Find out the swing equation for a group of
Coherent condition, and
Non-coherent condition.
7. Write short notes on any two of the following:
Surge impedance
Transient in R-L series circuit
Formation of transformation Z bus using singular
Derive an expression for
Z(ohm) x (MVA)Base/(kv)Base^2
Obtain the per unit (reactance) diagram of the power system.
Generator No.1: 50 MVA, 10.5 kV, X" =1·45 ohm, Xn2 =0·5 ohm
Generator No.2: 20 MVA, 6·6 kV, X" =1·23 ohm, Xn2 =0.5 ohm
Transformer T1 (3-phase) 20 MVA, 33/11 kV, 15·23 ohm per phase on high tension side.
Transformer T2 (3-phase) 20 MVA, 33/6·2 kV, X 16·17 ohm per phase on high tension side.
Transmission line: 22·5 ohm/phase.
2. Mention two objectives of short circuit analysis. Deduce and draw the sequence network for a line to ground fault at the terminals of an unloaded generator.
3. Why is the load flow study required? Explain the Newton-Raphson method and its advantages over the Gauss-Siedel method.
Explain the application of equal area criterion to study the transient stability for a sustained line fault.
Discuss the factors affecting the transient stability. How can the transient stability be improved?
Explain Bewley's lattice diagram.
Determine the reflection and refraction coefficient for a short circuit transmission line.
With the help of equal area criterion, explain how the automatic reclosing circuit breaker and turbine fast valving help to improve the system stability.
Find out the swing equation for a group of
Coherent condition, and
Non-coherent condition.
7. Write short notes on any two of the following:
Surge impedance
Transient in R-L series circuit
Formation of transformation Z bus using singular
Other Question Papers
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- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
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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