Electrical Machines Which type of motors are used for lathes? Cage induction motor. DC shunt motors. Synchronous motor. Either A or B. Cage induction motor. DC shunt motors. Synchronous motor. Either A or B. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm. Find the rotor efficiency? 96% 94% 92% 95% 96% 94% 92% 95% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 55 kVA single phase alternator has an effective resistance of 0.5 Ω. An excitation current of 10 A produces 200 A armature current on short circuit and an emf of 450 V on per circuit. The synchronous reactance will be 2.74 Ω. 25.564 Ω. 2.241 Ω. 2.781 Ω. 2.74 Ω. 25.564 Ω. 2.241 Ω. 2.781 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under which of the following conditions is a dc motor provided with compensating winding used ? 1. Wide range of speed control above normal 2. Wide range of steady load variation with no speed control 3.Wide range of rapid variation in load Select the correct answer using the codes given below : Codes : 1, 2 and 3 1 and 2 1 and 3 2 and 3 1, 2 and 3 1 and 2 1 and 3 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In escalator which motor is used? 3 - φ IM. DC shunt motor. Universal motor. 1 - φ IM. 3 - φ IM. DC shunt motor. Universal motor. 1 - φ IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direction of the current in the compensating winding is________ to the direction of current in the armature conductors? either of these None of these same exactly opposite either of these None of these same exactly opposite ANSWER DOWNLOAD EXAMIANS APP
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