Electrical Machines A generator may loose residual magnetism due to vibrations. any of these. over excitation. heating. vibrations. any of these. over excitation. heating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Unbalance 3 - Φ stator currents cause All of these heating of rotor. double frequency currents in the rotor. vibrations. All of these heating of rotor. double frequency currents in the rotor. vibrations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For higher values of armature, the speed of a DC series motor is Inversely proportional to armature current. Proportional to armature current. Proportional to the square of armature current. Constant. Inversely proportional to armature current. Proportional to armature current. Proportional to the square of armature current. Constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 12 pole triplex lap wound DC armature, each conductor can carry current of 100 A. The rated current of this armature is 600 A. 1200 A. 2400 A. 3600 A. 600 A. 1200 A. 2400 A. 3600 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a transformer is loaded, the secondary terminal voltage drops. That means power factor is leading. lagging. unity. zero. leading. lagging. unity. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for increasing efficiency. reducing armature reaction. mechanical balancing. All of these increasing efficiency. reducing armature reaction. mechanical balancing. All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS