Power System Planning and Design (2180903) MCQs

MCQs of Power system improvement

Showing 1 to 10 out of 26 Questions
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1.
Steady-state stability of power systems is improved by
(a) Reducing fault clearing time
(b) Using double circuit line instead of single circuit line
(c) Single pole switching
(d) Decreasing generator inertial
Answer:

Option (b)

2.
The transient stability of power system can be effectively improved by
(a) Excitation control
(b) Phase shifting transformer
(c) Single pole switching of circuit breakers
(d) Increasing the turbine valve opening
Answer:

Option (c)

3.
Bulk power transmission over long HVDC lines are preferred, on account of
(a) Low cost of HVDC terminals
(b) No harmonics problems
(c) Minimum line power losses
(d) Simple protection
Answer:

Option (b)

4.
The main consideration for higher and higher operating voltage of transmission is to
(a) Increase the efficiency of transmission
(b) Reduce power losses
(c) Increase power transmission capability
(d) None of above
Answer:

Option (c)

5.
Series capacitive compensation in EHV transmission lines is used to
(a) Reduce the line loading
(b) Improve the stability of the system
(c) Reduce the voltage profile
(d) Improves the protection of the line
Answer:

Option (b)

6.
For a long uncompensated line the limit to the line loading is governed by
(a) Thermal limit
(b) Voltage drop
(c) Stability limit
(d) Corona loss
Answer:

Option (c)

7.
With 100 % inductive shunt compensation, the voltage profile is flat for
(a) 100% loading line
(b) 50% loading line
(c) Zero loading of line
(d) None of above
Answer:

Option (c)

8.
Transient stability limit of a power system be improved by adding __________________ in system.
(a) Series resistance
(b) Series capacitor
(c) Series inductor
(d) Shunt resistance
Answer:

Option (b)

9.
Which among the following methods is used for improving the system stability?
(a) Increasing the system voltage
(b) Reducing the transfer reactance
(c) Using high speed circuit breaker
(d) All of above
Answer:

Option (d)

10.
What is steady state stability limit?
(a) The maximum flow of power through a particular point in the power system without loss of stability when small disturbances occur.
(b) The maximum power flow possible through a particular component connected in the power system.
(c) The maximum flow of power through a particular point in the power system without loss of stability when sudden disturbances occur.
(d) All of above
Answer:

Option (a)

Showing 1 to 10 out of 26 Questions
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