DC Motors Which of the following in a dc motor, can sustain the maximum temperature rise? Commutator Slip rings Field winding Armature winding Commutator Slip rings Field winding Armature winding ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Armature copper loss None of these Field copper loss Windage loss Armature copper loss None of these Field copper loss Windage loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors The starting resistance of a DC motor is generally Low Infinitely large 1000 Ω Around 500 Ω Low Infinitely large 1000 Ω Around 500 Ω 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 The rheostatic speed control method is very Unsuitable for rapidly changing loads Efficient Suitable for getting speeds above the normal Economical Unsuitable for rapidly changing loads Efficient Suitable for getting speeds above the normal Economical ANSWER DOWNLOAD EXAMIANS APP
DC Motors A three point starter is considered suitable for Shunt, compound and series motors Shunt motors All D.C. motors Shunt as well as compound motors Shunt, compound and series motors Shunt motors All D.C. motors Shunt as well as compound motors ANSWER DOWNLOAD EXAMIANS APP
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