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Electrical Machines
The output power indicated on the name plate of any motor is always the
Power drawn in KW.
Power drawn in KVA.
Gross power.
Output power at the shaft.
Power drawn in KW.
Power drawn in KVA.
Gross power.
Output power at the shaft.
Answer
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Related Question
Electrical Machines
which of the following losses are negligible in blocked rotor test?
mechanical loss
iron loss
copper loss
both A and B
mechanical loss
iron loss
copper loss
both A and B
Answer
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Electrical Machines
Which single phase motor is used for a refrigerator?
Capacitor run.
Repulsion.
Universal.
Split phase.
Capacitor run.
Repulsion.
Universal.
Split phase.
Answer
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Electrical Machines
In travelling cranes for swing action which motor is preferred?
Reluctance motor.
DC series motor.
AC slip ring IM.
Capacitor type induction motors.
Reluctance motor.
DC series motor.
AC slip ring IM.
Capacitor type induction motors.
Answer
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Electrical Machines
An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?
2166.67V, 230 rpm.
541.67V, 250 rpm.
541.67V, 200 rpm.
2166.67V, 270 rpm.
2166.67V, 230 rpm.
541.67V, 250 rpm.
541.67V, 200 rpm.
2166.67V, 270 rpm.
Answer
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Electrical Machines
In DC generator, armature reaction refers to what?
Effect of armature flux on the load.
Effect of armature flux on the main field flux.
Effect of field flux on the armature flux.
None of these
Effect of armature flux on the load.
Effect of armature flux on the main field flux.
Effect of field flux on the armature flux.
None of these
Answer
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