Explore topic-wise MCQs in Electrical Engineering Questions.

As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit____________________?

In case of conductively compensated D.C. series motors, the compensating winding is provided______________?

In case-the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be______________?

If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ?

The size of poxvirus is_______________?

Which D.C. motor will be preferred for machine tools ?

No-load speed of which of the following motor will be highest ?

Kingdom Protoctista includes_______________?

The direction of rotation of a D.C. series motor can be changed by___________?

Which of the following application requires high starting torque ?

Which of the following load normally needs starting torque more than the rated torque?

The starting resistance of a D.C. motor is generally_______________?

The ratio of starting torque to full-load torque is least in case of____________?

In D.C. motor which of the following can sustain the maximum temperature rise?

If the field of a D.C. shunt motor gets opened while motor is running______________?

In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to

Which of the following law/rule can he used to determine the direction of rotation of D.C. motor ?

The speed of a D.C. series motor is_____________?

In case of D.C. shunt motors the speed is dependent on back e.m.f. only because____________?

In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be_____________?

For starting a D.C. motor a starter is required because___________?

A D.C. series motor is that which______________?

In D.C. shunt motors as load is reduced__________________?

Starters are used with D.C. motors because______________?

If a D.C. motor is connected across the A.C. supply it will_______________?

When two D.C. series motors are connected in parallel, the resultant speed is____________?

To get the speed of D.C, motor below the normal without wastage of electrical energy is used?

The type of D.C. motor used for shears and punches is_____________?

A direct on line starter is used: for starting motors___________?

The speed of a D.C. shunt motor more than its full-load speed can be obtained by_____________?

What will happen if the back e.m.f. of a D.C. motor vanishes suddenly?

In a D.C. shunt motor, speed is______________?

Which D.C. motor is preferred for elevators ?

According to Fleming’s left-hand rule, when the forefinger points in the direction of the field or flux, the middle finger will point in the direction of_________________?

In which of the following applications D.C. series motor is invariably tried?

By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?

Differentially compound D.C. motors can find applications requiring___________?

In D.C. machines fractional pitch winding is used__________?

These days D.C. motors are widely used in____________?

The power mentioned on the name plate of an electric motor indicates____________?

The current drawn by the armature of D.C. motor is directly proportional to__________?

A three point starter is considered suitable for______________?

Which one of the following is not the function of pole shoes in a D.C. machine ?

If the load on a DC shunt motor is increases, its speed is slightly reduced due to______________?

If the field winding resistance of a DC shunt motor is increases, its speed will____________?

Which D.C. motor has got maximum self loading property?

In which of the following device the generated emf and armature current are in the opposite directions?

With the increase in temperature, the speed of DC series motor______________?

With the increase in temperature, the speed of DC shunt motor____________?

For the same H.P. rating and full load speed, following motor has poor starting torque_____________?