SSC JE Electrical 2019 with solution SET-1
 Identify the INCORRECT statement with regards to synchronous motors

The field winding is placed on the rotor
The armature winding is placed on the stator
It is a self-starting machine
It is a constant speed motor

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SSC JE Electrical 2019 with solution SET-1
 Z1 and Z2 are connected in series to form a load. A wattmeter’s current coil is connected in series with the load, whereas its pressure coil is connected across Z2. The wattmeter reads

Power consumed by Z2
Power consumed by Z1 and Z2
Zero always
Power consumed by Z1

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SSC JE Electrical 2019 with solution SET-1
 Two decimal coils A and B of 1000 turns each lies in the parallel plane such that 80% of the flux produced by one coil links with the other. If a current of 5A flowing in A produces a flux of 0.05 mWb, then the flux linking with coil B is:

0.04 mWb
0.004 mWb
4 mWb
0.4 mWb

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