Electrical Machines With the increases in field excitation of a DC generator, its generated emf remains constant. decreases. increases. increases upto a limit and then remains almost constant. remains constant. decreases. increases. increases upto a limit and then remains almost constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms is connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 340 A. 460 A. 250 A. 570 A. 340 A. 460 A. 250 A. 570 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Swinburne test is conducted under which of the following condition? no load full load any of the above half load no load full load any of the above half load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following speed control of DC motor the speed obtained is below than the rated speed? Any of above. Field resistance control. Armature voltage control. Armature circuit resistance control. Any of above. Field resistance control. Armature voltage control. Armature circuit resistance control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 21% 41% 10% 11% 21% 41% 10% 11% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb. 30 volts. 40 volts. 20 volts. 10 volts. 30 volts. 40 volts. 20 volts. 10 volts. ANSWER DOWNLOAD EXAMIANS APP
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