Transmission And Distribution Part 4

Transmission And Distribution Part 4

Q1. In a D.C. 3-wire distributor using balancers and having unequal loads on the two sides

A.  both balancers run as generators
B.  both balancers run as motors
C.  balancer connected to lightly- loaded side runs as a motor
D.  balancer connected to heavily- loaded side runs as a motor

Ans. C

Q2. A 3-phase 4 wire system is commonly used on

A.  primary transmission
B.  secondary transmission
C.  primary distribution
D.  secondary distribution

Ans. D

Transmission And Distribution Part 4

Q3. Which of the following regulations is considered best ?

A.  0.5
B.  0.2
C.  0.1
D.  0.02

Ans. D

Q4. A circuit is disconnected by isolators when

A.  line is energized
B.  there is no current in the line
C.  line is on full load
D.  circuit breaker is not open

Ans. B

Q6. When the interconnector between two stations has large reactance

A.  the transfer of power will take place with voltage fluctuation and noise
B.  the transfer of power will take place with least loss
C.  the stations will fall out of step because of large angular displacement, between the stations
D.  none of the above

Ans. C

Transmission And Distribution Part 4

Q7. In A.C.S.R. conductor the function of steel is to

A.  provide additional mechanical strength
B.  prevent corona
C.  take care of surges
D.  reduce inductance and subsequently improve power factor

Ans. A

Q8. Corona results in

A.  radio interference
B.  power factor improvement
C.  better regulation
D.  none of the above

Ans. A

Q9. In a 70/6 A.C.S.R. conductor there are

A.  35 aluminium conductors and 3 steel conductors
B.  70 aluminium conductors and 6 steel conductors
C.  70 steel conductors and 6 aluminium conductors
D.  none of the above

Ans. B

Q10. Steepness of the travelling waves is alternated by ____ of the line

A.  capacitance
B.  inductance
C.  resistance
D.  all of the above

Ans. C

Transmission And Distribution Part 4