Electrical Machines Which of the following bearings and their uses are correct roller bearings → large machines ball bearings → small machines neither 1 nor 2 both A and B roller bearings → large machines ball bearings → small machines neither 1 nor 2 both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor must started on no load because it would Fail to start without load. Run at dangerously high speed. Not develop starting torque. Draw more current without producing sufficient torque. Fail to start without load. Run at dangerously high speed. Not develop starting torque. Draw more current without producing sufficient torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the pitch factor? Cos (α/2) Cos α Cos α² sin (α/2) Cos (α/2) Cos α Cos α² sin (α/2) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation of the synchronous generator fails, it acts as a/an synchronous motor. induction generator. induction motor. synchronous generator. synchronous motor. induction generator. induction motor. synchronous generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors are used for lathes? DC shunt motors. Either A or B. Synchronous motor. Cage induction motor. DC shunt motors. Either A or B. Synchronous motor. Cage induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In large sized DC machines the compensating windings are provided to neutralize voltage induced in coil due to fluctuation of l reduce eddy current losses by providing local short circuits. compensate for the decrease in speed due to increase of load. None of these neutralize voltage induced in coil due to fluctuation of l reduce eddy current losses by providing local short circuits. compensate for the decrease in speed due to increase of load. None of these ANSWER DOWNLOAD EXAMIANS APP
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