Electrical Machines R1 is the resistance of the primary winding of the transformer. The turn ratio in terms of primary to secondary is K. Then the equivalent resistance of the primary referred to secondary is R1 /K² R1 /K K²R1 K×R1 R1 /K² R1 /K K²R1 K×R1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The coil spam may or may not be exactly equal to people pitch. must be exactly equal to people pitch. can never be equal to pole pitch. none of above. may or may not be exactly equal to people pitch. must be exactly equal to people pitch. can never be equal to pole pitch. none of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard system, the lower limit of the speed imposed by Armature resistance. None of above. Field resistance. Residual magnetism of the generator. Armature resistance. None of above. Field resistance. Residual magnetism of the generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a seperately excited DC Motor if field current is increased, it will Reduce armature heating. Increase acceleration duration. Reduce starting torque. Increase speed Reduce armature heating. Increase acceleration duration. Reduce starting torque. Increase speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is cross – magnetizing. demagnetizing. magnetizing. ineffective. cross – magnetizing. demagnetizing. magnetizing. ineffective. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor wound rotor motor is mainly is used in application where high starting torque. less costly motor is not required. power factor is less. low starting torque. high starting torque. less costly motor is not required. power factor is less. low starting torque. ANSWER DOWNLOAD EXAMIANS APP
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