The EMF equation e = N r sin rt is applicable to ____________ – McqOptions

MCQOPTIONS

1.	The EMF equation e = N r sin rt is applicable to ____________
A.	AC systems with time variant field flux
B.	DC systems with time variant field flux
C.	Both AC and DC systems with time invariant field flux
D.	Both AC and DC systems with time variant field flux
Answer» D. Both AC and DC systems with time variant field flux

Discussion

No Comment Found

Related MCQs

The DC machines are designed with flat topped flux density waves because _______________
A 6 pole machine is rotating at a speed of 1200rpm. This speed in mechanical rad/sec and electrical radians per second is respectively?
If the dimensions of all the parts of a synchronous generator and the number of field and armature turns are doubled, then the generated voltage will change by a factor of ________
In an alternator, frequency per revolution is equal to ___________
If the rotor of an induction motor is made to revolve in a direction opposite to the rotating flux wave, then RMS value of EMF induced in one phase of rotor E is proportional to ____________
The equation for slip speed is ____________
A polyphase induction motor of the slip ring or wound rotor type can be used ____________
In an AC machine, the effect of distributing the turns in different slots, results in a further reduction of generated EMF by the factor kd. This factor is called ____________
In AC rotating machines, the generated or speed EMF ___________
In the equation for RMS value of the generated EMF in a full pitched coil of an AC machine, E = Emax/ 2 = 2 frN , fr depends on ____________