(A) Consume lagging VARs
(B) Deliver lagging VARs
(C) Consume active power
(D) Deliver active power
Answer:(B) Deliver lagging VARs
Explanation:
Shunt capacitor banks are primarily used to improve the power factor in the network
It is always desired to commission a capacitor bank nearer to reactive load, this makes the transmission of reactive kVARS removed from a greater part of the network
Shunt capacitors operate at leading pf (like No-load over-excited synchronous motors)i.e. they consume leading VARs by delivering the lagging VARs.
Reactive power supplied by capacitor bank is given by the formula:
Q=P(tanδ−tanδ′)
Where cosδ is power factor before compensation
Cosδ’ is power factor after compensation
P is real power supplied in kW
More MCQS
1. Under over excitation synchronous phase modifier works as
2. The neutral of the power system may be connected to earth
3. The time to open the circuit breaker contact is called as
4. A 100 Ah capacity battery should deliver a current of 10 A for approximately _____ hrs.
5. For 400KV line, The Spacing Between phase conductor is around
6. Shunt capacitors in a sub-station
7. An alternator is said to be over excited when it is operating at
8. In case of transformer Buchholz relay is used to protect from
9. Series capacitors are used to
10. Disadvantage of low power factor is
11. The colour of neutral three core flexible cable is
12. The location of ground faults in underground cables can be found by
13. Fault location in an HV cable is done by
15. Which of the following is not a valid advantage of bundle conductor?
16. Star-star power transformer is protected by current transformer having
17. The surge resistance of cables is
18. Skin effect is only noticeable at _______ frequencies.
19. When transmission voltage is increased, the line losses are
20. Var compensators are used to
More E-Books
For More Transformer MCQs (Set of 400 Most Asked MCQs)