When excitation given to a 3-phase alternator is equal to terminal vol – McqOptions

MCQOPTIONS

1.	When excitation given to a 3-phase alternator is equal to terminal voltage then ____________
A.	the absorbed reactive power is zero
B.	the absorbed real power is zero
C.	the delivered real power is zero
D.	any of the mentioned
Answer» B. the absorbed real power is zero

Discussion

No Comment Found

Related MCQs

An 3 phase alternator star connected 400 V synchronous motor takes a power input of 5472 watts at rated voltage. Its synchronous reactance is 10** per phase and negligible resistance. If its excitation voltage is adjusted equal to the rated voltage of 400 V, its power factor is _______
Under the conditions of maximum values of active or reactive power, a synchronous machine always absorbs reactive power.
What is Synchronous motor?
If the synchronous motor connected to the infinite bus bar absorbs reactive power to it, then it must be operating at __________
For an underexcited 3 phase synchronous motor, connected to IBB is __________
If the synchronous motor connected to the infinite bus bar delivers positive reactive power to it, then it must be operating at __________
For an overexcited 3 phase synchronous motor, connected to infinite bus is __________
Under the condition of maximum power delivered, reactive power is __________
Under the conditions of maximum reactive power output, the reactive power flowing out of an alternator is __________
When terminal voltage exceeds the excitation, then operating power factor is?