Electrical Machines In a DC motor under constant terminal voltage what is the relation between torque (Te) and power (P) T∝ P³ T∝ P² T∝ P T is independent of P T∝ P³ T∝ P² T∝ P T is independent of P ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following generators are used in arc welding? differential compound generators shunt generators series generators cumulative compound generators differential compound generators shunt generators series generators cumulative compound generators ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Universal motor have which of the following application? Domestic pump. Food mixer. Traction. Lift. Domestic pump. Food mixer. Traction. Lift. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase slip ring induction motor is wound for 4 poles on stator and 6 poles on the rotor. When 3-phase balanced voltage source at 50 Hz is applied, it will run at 1000 rpm 1500 rpm 750rpm zero speed 1000 rpm 1500 rpm 750rpm zero speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following factors improve commutation in a dc machine ? 1. High contact resistance of brushes 2. High inductance of the coils undergoing commutation 3. Shifting of brushes in the direction of rotation for a generator and in the opposite direction For a motor 4. Narrow width for the commutation bars Select the correct answer using the codes given below : Codes : 2, 3 and 4 1 and 3 1, 2 and 4 1, 2, and 3 2, 3 and 4 1 and 3 1, 2 and 4 1, 2, and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, the reluctance power varies as cosδ sinδ cos2δ sin2δ cosδ sinδ cos2δ sin2δ ANSWER DOWNLOAD EXAMIANS APP
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