Electrical Machines If the speed of a dc motor increases with load torque, then it is a comulatively compounded motor series motor permanent magnet motor differentially compounded motor comulatively compounded motor series motor permanent magnet motor differentially compounded motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor has which of the following characteristics? Has a poor torque. Has a almost constant speed. Has its field winding consinting of thick wire and less no of turns. Can be started easily without load. Has a poor torque. Has a almost constant speed. Has its field winding consinting of thick wire and less no of turns. Can be started easily without load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ slip ring motor has wound rotor. short-circuited rotor. any of the above. double cage rotor. wound rotor. short-circuited rotor. any of the above. double cage rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms. 0.573. 0.443. 0.512. 0.649. 0.573. 0.443. 0.512. 0.649. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous machine, if φ is the flux per pole and f is the frequency of the emf induced E then E ∝ f/φ E ∝ φf E ∝ φ/f E ∝ 1/(φf) E ∝ f/φ E ∝ φf E ∝ φ/f E ∝ 1/(φf) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC shunt motor by varying field flux, what may be the value of field regulator? 2 ohm. 0.2 ohm 100 ohm 10 ohm 2 ohm. 0.2 ohm 100 ohm 10 ohm ANSWER DOWNLOAD EXAMIANS APP
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