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SSC JE 2017: Electrical Machines Rankers Quiz 3
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Question 1
A synchronous motor working at leading power factor can be used as:
Question 2
Which of the following motors can be run on A.C. as well as D.C. supply?
Question 3
A 150 V DC motor of an armature resistance 0.4Ω has back emf of 142 V. The armature current is:
Question 4
For which of the following, the excitation control method is satisfactory?
Question 5
The number of conductors of the compensating winding in a D.C. machine ____________.
Question 6
The single phase Induction Motor (IM) which does not have centrifugal switch is
Question 7
Turbo alternators have rotors of
Question 8
A single phase transformer has 400 primary and 1000 secondary turns. The net cross-sectional area of the core is 
If the primary is connected to 
source, the peak value of flux density in the core is
If the primary is connected to source, the peak value of flux density in the core is Question 9
A 
transformer takes no-load current of 
and absorbs 187 W. If the resistance of the primary is 
what is the core loss?
transformer takes no-load current of and absorbs 187 W. If the resistance of the primary is what is the core loss? Question 10
A 10Ω resistive load is to be impedance matched by a transformer to a source with 6250Ω of internal resistance. The ratio of primary to secondary turns of transformer should be:
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Aug 24ESE & GATE EE
