Electrical Machines If the excitation is critical, the power factor of the alternator is leading power factor. unity power factor. None of these lagging power factor. leading power factor. unity power factor. None of these lagging power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Iron losses in a DC machine are independent of variation in load. speed. speed and voltage. voltage. load. speed. speed and voltage. voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction depends on which of the following? None of these both 1 and 2 power factor of load magnitude of load current None of these both 1 and 2 power factor of load magnitude of load current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dynamic braking is very effective for differential compound motors. shunt motors. separately excited motors. series motors. differential compound motors. shunt motors. separately excited motors. series motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are identical as 4% from no load to full load. Consider the governors operating at 50Hz on no load. How will the machine share, if the load is 600 MW? 200 MW and 400MW respectively 230.7 MW and 369.23 MW respectively generator 1 gets over load generator 2 gets over load 200 MW and 400MW respectively 230.7 MW and 369.23 MW respectively generator 1 gets over load generator 2 gets over load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is All of these armature circuit resistance control supply voltage control field current control All of these armature circuit resistance control supply voltage control field current control ANSWER DOWNLOAD EXAMIANS APP
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