DC Motors Which of the following can be used for controlling the speed of a dc motor? Transistor Thyristor Thyratron Thermistor Transistor Thyristor Thyratron Thermistor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor is inversely proportional to applied voltage inversely proportional to flux per pole None of the listed here Directly proportional to flux per pole inversely proportional to applied voltage inversely proportional to flux per pole None of the listed here Directly proportional to flux per pole ANSWER DOWNLOAD EXAMIANS APP
DC Motors For constant torque drive which speed control method is preferred? Armature voltage control Mechanical loading system Field control Shunt armature control Armature voltage control Mechanical loading system Field control Shunt armature control ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor if the back emf is absent Motor will burn Motor will run at very slow speed Motor will run at very high speed Motor will not run at all Motor will burn Motor will run at very slow speed Motor will run at very high speed Motor will not run at all ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following tests will be suitable for testing two similar D.C. series motors of large capacity? Field test Brake test Swinburne's test Hopkinson's test Field test Brake test Swinburne's test Hopkinson's test ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the armature of a D.C. motor rotates, e.m.f. induced is Self-induced e.m.f. Mutually induced e.m.f. None of these Back e.m.f. Self-induced e.m.f. Mutually induced e.m.f. None of these Back e.m.f. ANSWER DOWNLOAD EXAMIANS APP
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