DGVCL EXAM PAPER (12-06-2016) QUIZ

Isolator in substation is open under _____ condition.

None of these

Full load

Short circuit

No load

TRUE ANSWER : ?
YOUR ANSWER : ?

What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage:

Eddy Current and Hysteresis losses will be excessive

Transformer may start to smoke and burn

Current will be too much high

No effect

TRUE ANSWER : ?
YOUR ANSWER : ?

A Step Up transformer :

Steps down the level of current

(a) and (b) only

Steps up the level of Voltage

Step up the level of Frequency

TRUE ANSWER : ?
YOUR ANSWER : ?

The main advantage of AC over DC is:

AC can be easily converted into DC by using a rectifier

All of these

Conversion flexibility from one voltage level to other

AC is easy to maintain & can be easily distributed at long distances

TRUE ANSWER : ?
YOUR ANSWER : ?

Which unit holds data permanently?

Input unit

Output Unit

Secondary storage unit

Primary Memory Unit

TRUE ANSWER : ?
YOUR ANSWER : ?

GUVNL is:

Gujarat Urja Vikas Nigam Limited

Gujarat Urja Vyapar Nigam Limited

Gujarat Urja Vikas Nikash Limited

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In a transformer the energy is conveyed from primary to secondary

None of these

By the flux

Through cooling coil

Through air

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YOUR ANSWER : ?

About how many times longer would a 10 watt light bulb be able to burn compared to a 100 watt bulb with the same energy?

10 times longer

Same time

None of these

100 times longer

TRUE ANSWER : ?
YOUR ANSWER : ?

Taskbar is used for

All of above

Navigation program

Start a program

Switching between program

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a part of transformer installation?

Buchholz Relay

Breather

Exciter

Conservator

TRUE ANSWER : ?
YOUR ANSWER : ?