Transmission And Distribution Part 1

Transmission And Distribution Part 1

Q1. The material used for the manufacture of grounding wires is

A.  cast iron
B.  aluminium
C.  stainless steel
D.  galvanised steel

Ans. C

Q2. In medium transmission lines the shunt capacitance is taken into account in

A.  T-method
B.  π-method
C.  steinmetz method
D.  all of the above

Ans. D

Transmission And Distribution Part 1

Q3. In overhead transmission lines the effect of capacitance can be neglected when the length of line is less than

A.  80 km
B.  110 km
C.  150 km
D.  210 km

Ans. A

Q4. Floating neutral, in 3-phase supply, is undesirable because it causes

A.  low voltage across the load
B.  high voltage across the load
C.  unequal line voltages across the load
D.  none of the above

Ans. C

Transmission And Distribution Part 1

Q5. The colour of the neutral of three-core flexible cable is

A.  blue
B.  brown
C.  red
D.  black

Ans. A

Q6. By which of the following systems electric power may be transmitted ?

A.  Overhead system
B.  Underground system
C.  Both (a) and (b)
D.  None of the above

Ans. C

Q7. The corona is considerably affected by which of the following ?

A.  Size of the conductor
B.  Shape of the conductor
C.  Surface condition of the conductor
D.  All of the above

Ans. D

Transmission And Distribution Part 1

Q8. The operating voltage of extra high tension cables is upto

A.  66 kV
B.  11 kV
C.  33 kV
D.  66 kV

Ans. D

Q9. The voltage of the single phase supply to residential consumers is

A.  110 V
B.  210 V
C.  230 V
D.  400 V

Ans. C

Q10. The power factor of industrial loads is generally

A.  unity
B.  lagging
C.  leading
D.  zero

Ans. B

Transmission And Distribution Part 1