1 Answer

Answer :

For the same H.P. rating and full load speed, following motor has poor starting torque differentially compounded.

Related questions

Description : In a double squirrel cage induction motor, good starting torque is produced as (A) Large current flows through the outer high resistance winding. (B) Large current flows through the inner high ... the outer high resistance winding. (D) Large current flows through the inner low resistance winding.

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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Last Answer : The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-in torque.

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Description : A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net Voltage across armature resistance at the time of plugging will be

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Last Answer : As the load is increased the speed of D.C. shunt motor will reduce slightly.

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Description : Why does the speed of a DC shunt motor decrease as the load increases?

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Last Answer : The starting resistance of a D.C. motor is generally low.

Last Answer : For starting a D.C. motor a starter is required because it limits the starting current to a safe value.

Last Answer : The starting winding of a single-phase motor is placed in stator.

Last Answer : If starting winding of a single-phase induction motor is left in the circuit, it will draw excessive current and overheat.

Last Answer : Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a magnetic relay.

Description : How is a three phase cage induction motor self starting?

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Description : Is induction motor is self starting?

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Description : DC motor gross torque example

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Last Answer : A synchronous motor can develop synchronous torque at synchronous speed.

Description : What is the maximum value of torque angle in synchronous motor?

Last Answer : The maximum value of torque angle in synchronous motor is 90 degrees electrical.

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Last Answer : The value of starting capacitor of a fractional horse power motor will be 300 uF .

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Last Answer : The rotor developed by a single-phase motor at starting is zero.

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Description : 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

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