Explore topic-wise MCQs in Electrical Engineering Questions.

A radian is defined as the central angle, for which length of its arc

Salient pole type motors have

Short pitched windings are mainly used because it

The direction of magnetic materials when the current passes through the conductor is determined by

Coulomb’s First Law states that

The cut - in voltage for silicon and germanium are

In DOL fuses are provided to protect against

The frequency of the induced emf in an induction motor is

In four - point starter, the no volt release is connected across the

The overload release protects the motor against

If the transformer is loaded then the secondary terminal voltage falls for and rises for

Slip of an induction motor increases with

Copper losses is proportional to

Efficiency of a transformer is maximum at

If the number of conductors and speed of a lap wound generator is doubled then the generated emf will be

Filters are used to convert

In an induction motor, rotor speed is always

Electric heaters is made up of

The frequency of rotor current in an induction motor is

In N - type semiconductor, the impurities added to a semiconductor are

By using two wattmeter method, power can be measured in

In delta connected system, the potential difference between line outers is

The two wattmeter method is applicable for

In a balanced 3-phase system, if one of the two wattmeter’s reading is negative then the

The P - type semiconductor impurities are also called as

From full load to no load, the change of terminal voltage is more in case of

Which among the following sentences is correct?

When the motor runs on no load, then

In core type transformer, the coils are wound in helical layers, each layers being insulated from each other by using

The synchronous generator is also called an

In India, the synchronous generator generates

The power curve for a purely resistive circuit is zero only when

The product of rms values of current and voltage is called as

The power absorbed by a pure inductive circuit and pure capacitive circuit is

When an ac power is applied to a reactive load, then the voltage is

If the magnetic field is stationary and the conductor is in motion then the emf induced is called

If a current of 5A flows through a resistor of 12 ohm then the power developed and the energy dissipated in 2 minutes are

Gauss’s law is applicable for

Electric bell consists of a

The field winding of dc series motor consists of few turns of

“ Total electric flux through any closed surface is equal to the charge enclosed by that surface ”. This is

The induced emf sets up the direction of current in such a way that the magnetic field produced by it

The amount of flux density set up in the core is dependent upon

Permeability of a material is

The potential difference between two points is given by

Electrical work is

If a number of resistors are connected in parallel, then the reciprocal of total resistance is equal to

The unit of electrical energy is / are

When a solenoid attracts an iron bar,

In India, direct - on - line starter can be used for 3 - phase squirrel cage induction motor up to the rating of