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 √3 3 1/3 1/√3 √3 3 1/3 1/√3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited DC generator, running at rated speed, has 6 volts across its armature terminals with no field current. When field winding is excited with one ampere, the voltage builds up to 250 V at no load. In case field current is reduced to zero, with the speed remaining unaltered, the armature terminal voltage would be less than 6 V zero 6 V more than 6 V less than 6 V zero 6 V more than 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following will vary the maximum torque? both 1 and 2 rotor reactance X None of these rotor resistance R both 1 and 2 rotor reactance X None of these rotor resistance R ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 0 V 4 V 2 V 1 V 0 V 4 V 2 V 1 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The maximum power developed in cylindrical synchronous machine is occurs at a load angle of less than 90o. 0o. Greater than 90o. 90o. less than 90o. 0o. Greater than 90o. 90o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous reactance of an alternator represents field winding reactance a reactance operating at synchronous speed All of these armature reactance and leakage reactance field winding reactance a reactance operating at synchronous speed All of these armature reactance and leakage reactance ANSWER DOWNLOAD EXAMIANS APP
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