Electrical Machines When flux density is constant in a transformer, hysteresis loss varies as f f² V² V f f² V² V 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 In a DC machine, which of these parameters remain the same whether it runs as a DC motor or a DC generator? Armature current. Can not be determined. Induced emf. Mechanical power. Armature current. Can not be determined. Induced emf. Mechanical power. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The 3 - Φ induction motors are, by a very considerable margin, the most widely used AC motors as they are capable of operation under range of leading and lagging pf. these are cheaper in cost, simple and rugged in construction. they have maximum efficiency and maximum starting torque. they have very good speed regulation. they are capable of operation under range of leading and lagging pf. these are cheaper in cost, simple and rugged in construction. they have maximum efficiency and maximum starting torque. they have very good speed regulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque depends on which of the following? both A and B flux (φ) armature current (I) speed both A and B flux (φ) armature current (I) speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Alternator operates on the principle of electromagnetic induction. mutual induction. self or mutual induction. self induction. electromagnetic induction. mutual induction. self or mutual induction. self induction. ANSWER DOWNLOAD EXAMIANS APP
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