TS ECET EEE 2020-8

1. Which of the following is not a part of the electric distribution network

A. Feeder
B. Distributor
C. Optical fibre
D. service mains

Answer : optical fibre
Explanation:-

2. Which of the following types of wiring is used for purely temporarily installations

A. concealed conduit wiring
B. surface conduit wiring
C. wood casing-capping wiring
D. cleat wiring

Answer : D. cleat wiring
Explanation:-

3. In a distribution transformer

A. The primary winding are star connected and the secondary winding are delta connected
B. Both primary and secondary windings are delta connected
C. The primary windings are delta connected and the secondary windings are star connected
D. both primary and secondary windings are star connected

Answer : C. The primary windings are delta connected and the secondary windings are star connected
Explanation:-

4. The function of choke and starter in a tube light circuit is to

A. create a high voltage across the tube during starting
B. improve resistance of the tube light circuit
C. reduce the power consumed by the tube light circuit
D. Help to draw very high current during starting

Answer : A. create a high voltage across the tube during starting
Explanation:-

5. The generated voltage is transmitted through transmission lines after stepping up the voltage so that

A. The voltage drop in the transmission line is reduced
B. for the square power transmitted the current flowing through the lines is reduced there by reducing the transmission losses
C. The transmission lines are kept far away from the fround level
D. Large amount power could be transmitted

Answer : B. for the square power transmitted the current flowing through the lines is reduced there by reducing the transmission losses
Explanation:-

6. Most of the faults on an overhead system are

A. single line to ground faults
B. double line to ground faults
C. line to line faults
D. 3-phase faults

Answer : A. single line to ground faults
Explanation:-

7. When single line to earth fault occurs on an ungrounded neutral system, the voltages of the haelthy phases rise from their normal phase voltages to

A. Remains same
B. line value
C. 2times the line value
D. 3times the line value

Answer : B. line value
Explanation:-

8. When a single line to earth fault ocuurs in solid grounding system, the phase to earth voltage of the remaining two healthy phases remain at

A. line voltage
B. phase voltage
C. more than phase voltage
D. more than line voltage

Answer : B. phase voltage
Explanation:-

9. In equipment grounding the enclosure is connected to

A. ground wire
B. neutral wire
C. phase wire
D. neutral wire and phase wire

Answer : A. ground wire
Explanation:-

10. In college laboratories which type of transformer is used

A. single phase core type
B. single phase shell type
C. star/delta transformer
D. star/star transformer

Answer : B. single phase shell type
Explanation:-