| 1. | The power factor of a single-phase induction motor is usually ? | |
|
lagging
|
||
|
always leading
|
||
|
unity
|
||
|
unity to 0.8 leading
|
||
View Answer
Discuss in Forum
Report Question| 2. | Hysteresis motors are suitable for ? | |
|
fans
|
||
|
blowers
|
||
|
sound equipment
|
||
|
mixer grinders
|
||
| 3. | A relay used on short transmission lines is ? | |
|
reactance relay
|
||
|
mho’s relay
|
||
|
impedance relay
|
||
|
None of these
|
||
| 4. | The highest voltage transmission line starting from generating point is called .......... ? | |
|
secondary transmission
|
||
|
secondary distribution
|
||
|
primary transmission
|
||
|
primary distribution
|
||
| 5. | A 30 km transmission line carrying power at 33 kV is known as ? | |
|
short transmission line
|
||
|
long transmission line
|
||
|
high power line
|
||
|
ultra high voltage line
|
||
| 6. | The insulating material for cables should be ? | |
|
non-hygroscopic
|
||
|
non-inflammable
|
||
|
acid proof
|
||
|
all options are correct
|
||
| 7. | Name the equipment which runs an alternator ? | |
|
Motor
|
||
|
Generator
|
||
|
Prime mover
|
||
|
Fan
|
||
| 8. | Electric strength in a cable is more on ......... ? | |
|
layer on the conductor
|
||
|
outside conductor
|
||
|
outer side of armouring
|
||
|
None of these
|
||
| 9. | In places where acids and alkalies are present, the type of wiring used is ? | |
|
PVC
|
||
|
TRS
|
||
|
VIR
|
||
|
Weather proof
|
||
| 10. | Replacement of wiring is not easy in which type of wiring ...... ? | |
|
conduit system
|
||
|
Lead sheathed
|
||
|
concealed wiring
|
||
|
cleat system
|
||