Electrical Machines In an induction motor, air gap power is 10 Kw and mechanically developed power is 8 Kw. What are the rotor ohmic losses? 0.5Kw 2KW 1.5KW 3KW 0.5Kw 2KW 1.5KW 3KW ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of 3 - Φ IM, plugging means starting the motor on load which is more than the rated load. pulling the motor directly on line without a rotor. interchanging two supply phases for quick stopping. locking of rotor due to harmonics. starting the motor on load which is more than the rated load. pulling the motor directly on line without a rotor. interchanging two supply phases for quick stopping. locking of rotor due to harmonics. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On what factors the speed of dc motor depends? Applied voltage. All of these. Armature current Ia. Field flux. Applied voltage. All of these. Armature current Ia. Field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator frame in an induction motor is used to ventilate the armature. hold armature stamping in position. provide return path for the flux. protect the whole machine. ventilate the armature. hold armature stamping in position. provide return path for the flux. protect the whole machine. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of squirrel cage induction motor is low at rated load only both A and B low at heavy loads only low at light loads only low at rated load only both A and B low at heavy loads only low at light loads only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC generator rotates at 1500 rpm. How many times in a second, will the emf induced in each armature conductor changes its direction? 200. 100. 500. 750. 200. 100. 500. 750. ANSWER DOWNLOAD EXAMIANS APP
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