Electrical Machines The reduced air gap results in an increase breaking torque. cost of operation. power factor. starting torque. breaking torque. cost of operation. power factor. starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors are preferred in lifts? DC series motors. DC shunt motors. None of these DC compound motors. DC series motors. DC shunt motors. None of these DC compound motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an AC servomotor has one of its winding excited by AC, then voltage measured at the other winding with rotor running will be zero. proportional to square of rotor speed. proportional to rotor speed. constant independent of speed. zero. proportional to square of rotor speed. proportional to rotor speed. constant independent of speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC compound motor the field regulator is provided to control the armature flux. limit the armature current. control the field flux. demagnetize the field partially. control the armature flux. limit the armature current. control the field flux. demagnetize the field partially. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The self induced emf in the coil undergoing commutation is called the None of these dynamically induced voltage. statically induced voltage. reactance voltage. None of these dynamically induced voltage. statically induced voltage. reactance voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/√3 3 √3 1/3 1/√3 3 √3 1/3 ANSWER DOWNLOAD EXAMIANS APP
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