1. The loads on distributors systems are generally ?

balanced

unbalanced

either of the above

none of the above

Answer: unbalanced

Explanation:


2. In a substation the following equipment is not installed ?

exciters

series capacitors

shunt reactor

voltage transformers

Answer: exciters

Explanation:


3. Pin type insulators are generally not used for voltages beyond ?

1 kV

11 kV

22 kV

33 kV

Answer: 33 kV

Explanation:


4. The effect of ice on transmission line conductors is to increase the ?

transmission losses

weight of the conductor

tendency for corona

resistance to flow of current

Answer: weight of the conductor

Explanation:


5. In medium transmission lines the shunt capacitance is taken into account in ?

T-method

n-method

steinmetz method

all of the above

Answer: all of the above

Explanation:


6. Which of the following equipment should be installed by the consumers having low power factor ?

Synchronous condensers

Capacitor bank

Tap changing transformer

Any of the above

Answer: Capacitor bank

Explanation:


7. The limit of distance of transmission line may be increased by the use of ?

series resistances

shunt capacitors and series reactors

series capacitors and shunt reactors

synchronous condensers

Answer: series capacitors and shunt reactors

Explanation:


8. Which of the following cause transient disturbances ?

Faults

Load variations

Switching operations

Any of the above

Answer: Any of the above

Explanation:


9. Which of the following is a static exciter ?

Rectifier

Rotorol

Amplidyne

D.C. separately excited generator

Answer: Rectifier

Explanation:


10. ln which of the following cases shunt capacitance is negligible ?

Short transmission lines

Medium transmission lines

Long transmission lines

All transmission lines

Answer: Short transmission lines

Explanation: