The electric motor used in portable drills is?

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The electric motor used in portable drills is?

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asked Mar 20, 2018 by anonymous

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Peterson coil is used for :

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In a dc machine, interpoles are used to

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

Last Answer : In D.C. machines fractional pitch winding is used to reduce the sparking.

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asked Mar 20, 2018 by anonymous

Starters are used with D.C. motors because?

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The capacitors used in single-phase capacitor motors have no?

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What are the five types of single phase motors used in the industry?

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Split phase induction motor

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asked Sep 20, 2018 by anonymous

A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s.

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asked May 8, 2018 by anonymous

Damper winding in a synchronous motor

Damper winding in a synchronous motor
Last Answer : Damper winding in a synchronous motor Serves to start the motor.

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asked May 8, 2018 by anonymous

In a double squirrel cage induction motor, good starting torque is produced as

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Last Answer : In a double squirrel cage induction motor, good starting torque is produced as Large current flows through the outer high resistance winding.

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asked May 8, 2018 by anonymous

A change of 4% in the supply voltage to an induction motor will produce a change of approximately

A change of 4% in the supply voltage to an induction motor will produce a change of approximately
Last Answer : A change of 4% in the supply voltage to an induction motor will produce a change of approximately 8% in the rotor torque

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asked May 8, 2018 by anonymous

A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance

A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is
Last Answer : A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is 36 Ohm

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asked May 3, 2018 by anonymous

In an induction motor if the flux density is reduced to one-half, of its normal value then the torque will

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Last Answer : In an induction motor if the flux density is reduced.to one-half, of its normal value then the torque will reduce to one-fourth

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asked May 1, 2018 by anonymous

The speed of a three-phase induction motor is controlled by variable voltage variable frequency control

The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque (1) Decreases (2) Increases (3) Remains constant (4) None of the above
Last Answer : The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque Increases

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The number of poles of 8/6 stepper motor can be :

The number of poles of 8/6 stepper motor can be :
Last Answer : The number of poles of 8/6 stepper motor can be : 4

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asked Apr 30, 2018 by anonymous

anonymous · Answer 1 · 2018-03-20T19:24:51+0000

The electric motor used in portable drills is universal motor.

The electric motor used in portable drills is?

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