Electrical Machines Maximum power developed in a cylindrical synchronous machine depends on excitation synchronous reactance load angle both 1and 2 excitation synchronous reactance load angle both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The residual magnetism of a self-excited dc generator is lost. To build up its emf again the field winding must be replaced field winding must be excited by low voltage dc supply the field winding connection must be reversed the armature connection must be reversed the field winding must be replaced field winding must be excited by low voltage dc supply the field winding connection must be reversed the armature connection must be reversed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does the use the of height flux density value in transformer design lead to? Reduced iron loss. Increase in weight/KVA. Decrease in weight/KVA. Reduced copper loss. Reduced iron loss. Increase in weight/KVA. Decrease in weight/KVA. Reduced copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The commutator segments of DC machines are made up of hard-drawn copper copper alloy brass copper hard-drawn copper copper alloy brass copper ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor. The frequency is 50Hz. The slip of the motor is 5% 4% 2% 25% 5% 4% 2% 25% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase, 2 KV alternator has an armature resistance of 0.8 ohms and 4.94 ohms respectively. The voltage regulation of the alternator at 100 a load 0.8 loading power factor is 14%. 0%. 7%. 8.9%. 14%. 0%. 7%. 8.9%. ANSWER DOWNLOAD EXAMIANS APP
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