GETCO EXAM PAPER (30-11-2008) QUIZ

The C.B.s which produces the least arc energy are

plain oil

air break

air blast

minimum oil

TRUE ANSWER : ?
YOUR ANSWER : ?

Highest voltage for transmitting electrical power in India is (in 2008)

400 kV

700 kV

765 kV

550 kV

TRUE ANSWER : ?
YOUR ANSWER : ?

Which loss in a transformer varies significantly with load?

Hysteresis loss

Core loss

Eddy current loss

Copper loss

TRUE ANSWER : ?
YOUR ANSWER : ?

The arc voltage in a C.B. is _____ with the arc current

lagging by 90˚

leading by 90˚

none of these

in phase

TRUE ANSWER : ?
YOUR ANSWER : ?

Power system A is operating in parallel with other systems and has a frequency bias of 50 MW/0.1 Hz. For a loss of generation in one of the interconnected systems resulting in a frequency drop of 0.02 Hz, system A should

provide 10 MW of support

provide 30 MW support

not be affected

provide 20 MW of support

TRUE ANSWER : ?
YOUR ANSWER : ?

The first battle of Panipat was fought in the year

1296 AD

1526 AD

1542 AD

1556 AD

TRUE ANSWER : ?
YOUR ANSWER : ?

A reactance relay is _ restrained _ relay.

voltage, directional

direction, over-current

voltage, over-current

direction, over-voltage

TRUE ANSWER : ?
YOUR ANSWER : ?

Bulk-oil CBs can be used for voltage upto

33 kV

11 kV

66 kV

1.1 kV

TRUE ANSWER : ?
YOUR ANSWER : ?

A CB under normal conditions, should be inspected once in

3 or 6 months

a week

5 years

a month

TRUE ANSWER : ?
YOUR ANSWER : ?

A buchholz will operate in a transformer whenever there is

over load

large internal fault

saturation of magnetic circuit

any of the above

TRUE ANSWER : ?
YOUR ANSWER : ?

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