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Three Phase Induction Motors

Three Phase Induction Motors
The maximum torque in an induction motor depends on

All of the listed here
Frequency
Rotor inductive reactance
Square of supply voltage

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Three Phase Induction Motors
One of the speeds of a 2 speed squirrel cage induction motor is 800 rpm. The other speed will be _____

2400 rpm
400 rpm
1200 rpm
1600 rpm

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Three Phase Induction Motors
The maximum torque of a 3-phase induction motor under running conditions is

inversely proportional to rotor reactance at standstill
None of the listed here
Inveresly proportional to supply voltage
Directly proportional to rotor resistance

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Three Phase Induction Motors
If any two phases for an induction motor are interchanged

The motor will run at reduced speed
The motor will run in reverse direction
The motor will not run
The motor will burn

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Three Phase Induction Motors
At no load the rotor core loss of a 3 phase induction motor is

Small
Practically zero
None of the listed here
Large

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Three Phase Induction Motors
The no load speed of an induction motor depends on

The supply frequency
Both supply frequency and number of poles
The maximum flux/poles
The number of its poles

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MORE MCQ ON Three Phase Induction Motors

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