MCQ-Set-1-Power System Operation & Control

Power System Operation and Control (PSOC)

Set : 1

1. Number of Generators runs parallel is called........ power system

A) cascade
B) interconnected
C) parallel
D) in line

... Answer is B)
interconnected

2. Which plant generators operate at much lower speed ?

A) steam
B) diesel
C) hydro
D) nuclear

... Answer is C)
hydro

3. which is most important in interconnected power system for balance demand ?.

A) frequency control
B) Speed control
C) harmonics control
D) power control

... Answer is A)
frequency control

4. frequency control is achieved through a.....

A) Turbine
B) generator
C) speed governor mechanism
D) speed changer

... Answer is C)
speed governor mechanism

5. rol of governor in power operation is to control the relation between ?

A) speed and frequency
B) speed and power
C) Speed and load
D) power and frequency

... Answer is C)
speed and load .

6. in speed governor mechanism frequency varies......% between light load and full load condition.

A) 1
B) 2
C) 3
D) 5

... Answer is C)
3%

7. Why Ground wire is placed at the top of transmission line ?

A) for connection
B) to support the tower
C) to protect against lighting stroke
D) All

... Answer is C)
to protect the line from lighting stroke.

8. in speed governor mechanism if load on turbine increase the speed of governor......

A) decrease
B) increase
C) constant
D) all

... Answer is A)
decrease.

9. The important control loops in interconnected power system are...

A) load frequency control
B) Automatic voltage control
C) Capacitive Control
D) both A and B

... Answer is D)
both A and B .

10. in interconnected power system which type of frequency control is not feasible ?

A) Automatic
B) program based
C) manual
D) non of above

... Answer is C)
manual.

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