Electrical Machines Oil is provided in an oil filled transformer for lubrication. both cooling and insulation. cooling. insulating. lubrication. both cooling and insulation. cooling. insulating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The short circuit test on a transformer is conducted to obtain hysteresis loss. eddy current loss. copper losses. core loses only. hysteresis loss. eddy current loss. copper losses. core loses only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a motor falls from 1100 r.p.m at no-load to 1050 r.p.m at rated load. The speed regulation of motor is 2.57 %. 3.76%. 4.76%. 2.56 %. 2.57 %. 3.76%. 4.76%. 2.56 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately excited DC motor has an armature resistance of 0.5 Ohm. The supply voltage is 250V. Armature current is 20A and the speed of rotation is 1500 rpm. Find the torque developed? Zero 15.6 Nm 16.55 Nm 15.28 Nm Zero 15.6 Nm 16.55 Nm 15.28 Nm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 6 pole, 50 Hz IM has a rotor speed of 987 rpm find rotor frequency? 0.70 Hz. 0.65 Hz. 60 Hz. 0.75 Hz. 0.70 Hz. 0.65 Hz. 60 Hz. 0.75 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines CRGO steel is used in the core of transformer to reduce both eddy current and hysteresis loss. eddy current loss. hysteresis loss. ohmic loss. both eddy current and hysteresis loss. eddy current loss. hysteresis loss. ohmic loss. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS