| 1. | For exact compensation of voltage drop in the feeder the booster ? | |
|
must be earthed
|
||
|
must work on line voltage
|
||
|
must work on linear portion of its characteristics
|
||
|
must work on non-linear portion of its V-I characteristics
|
||
View Answer
Discuss in Forum
Report Question| 2. | Corona is likely to occur maximum in ? | |
|
transmission lines
|
||
|
distribution lines
|
||
|
domestic wiring
|
||
|
all of the above
|
||
| 3. | By using bundled conductors which of the following is reduced ? | |
|
Power loss due to corona
|
||
|
Capacitance of the circuit
|
||
|
Inductance of the circuit
|
||
|
None of the above
|
||
| 4. | The colour of the neutral of three-core flexible cable is ? | |
|
blue
|
||
|
brown
|
||
|
red
|
||
|
black
|
||
| 5. | ln the cables sheaths are used to ? | |
|
prevent the moisture from entering the cable
|
||
|
provide strength to the cable
|
||
|
provide proper insulation
|
||
|
none of the above
|
||
| 6. | Earthing is necessary to give protection against ? | |
|
danger of electric shock
|
||
|
voltage fluctuation
|
||
|
overloading
|
||
|
high temperature of the conductors
|
||
| 7. | The size of the earth wire is determined by ? | |
|
the atmospheric conditions
|
||
|
the voltage of the service wires
|
||
|
the ampere capacity of the service wires
|
||
|
none of the above
|
||
| 8. | Which of the following equipment is used to limit short-circuit current level in a substation ? | |
|
Isolator
|
||
|
Lightning switch
|
||
|
Coupling capacitor
|
||
|
Series reactor
|
||
| 9. | Out of the following which type of poles are bulky ? | |
|
Transmission towers
|
||
|
Concrete poles
|
||
|
Tubular steel poles
|
||
|
Wooden poles
|
||
| 10. | A tap changing transformer is used to ? | |
|
supply low voltage current for instruments
|
||
|
step up the voltage
|
||
|
step down the voltage
|
||
|
step up as well as step down the voltage
|
||