A test used to determine the equivalent resistance of an induction motor is _.

The unit of retentivity is

in running condition the rotor reactance of 3Φ induction motor is proportional to

The ratio of the total flux to useful flux is called _.

With reduction of load on alternator

The process by which metallic parts are demagnetized is called

The gas inside the inner discharge tube of a sodium vapor lamp is

What is the nature of the current flowing in the armature of DC machine?

Which of the following frequencies has the longest period?

If one of the resistors in a parallel circuit is removed, what happens to the total resistance?

What is the purpose of using oil in the transformer?

Skin effect is proportional to

The three primary colors in the chrominance signal of a color TV are

An alternator running in parallel with the other alternators all having automatic voltage regulators is to be taken off the bus. The usual procedure before opening the switch is to

Which one of the following is not one of the relays of transmission line?

The area of hysteresis loop is the measure of

Slip rings are made of

Moving coil instruments are used

The efficiency of thermal plant is approximately _.

Merz – Price protection is used on

The greater percentage of materials are _ .

The greatest percentage of power loss in dc motor is due to

The charge of a hole is _.

Transient current in an RLC circuit is oscillatory when

As load pf of an alternator becomes more leading, the value of the generated voltage required to give rated terminal voltage _.

This device is used to reflect back surges into the line

Some of the arrangement for switch/panel boards are as follows, except _.

The fuse used for the overhead primary distributors is

Porcelain insulators are protected against creepage of surge current by the use of _.

This is a lighting system wherein the percentage of upward and downward brightness is the same.

Which motor is used to start heavy loads?

The capacitor in a capacitor start induction run ac motor is connected in series with _ winding?

Power circuit breakers can be classified according to operation, some of these are, except

This is the least prevalent shunt fault among transmission and distribution lines.

In what year was the first 500 kV line in the world became operational?

A standard candle emits a total luminous flux of _ lumens