DGVCL EXAM PAPER (11-12-2011) QUIZ

CPU

Modem

UPS

Keyboard

To reduce the magnetic hum of the motor

To increase the distributuion factor

To increase the breadth factor

To reduce the locking tendency of the rotor

Vacuum CB

Minimum Oil CB

Bulk Oil CB

Air break CB

Both phased and neutral wire

Neutral wire

Phase wire

Earth continuity conductor

Phase faults only

Both phase and earth faults

Over voltage faults

Earth faults only

A definite time cuttent characteristic

A definite time characteristic for low values of the failt current and an inverse characteristic for high values of the fault current

An inverse time current characteristic

An inverse characteristic for low values of the fault current and a definite time characteristic for high values of the fault current

Low specific resistance and high melting point

High specific resistance and high melting point

High specific resistance and low melting point

Low specific resistance and low melting point

5 %

0.4 %

6 %

4 %

DC

Negative cycle of sine wave

Positive cycle of sine wave

AC

Double line to ground faults

Single line to ground faults

Three phase short ciruits

Phase to phase faults