What is the average coil emf generated in a 4-pole DC machine having – McqOptions

MCQOPTIONS

1.	What is the average coil emf generated in a 4-pole DC machine having flux/pole equal to 0.1 wb rotating at 1500 rpm? (No. of coil sides = 100)
A.	19 kV
B.	1.9 kV
C.	190 V
D.	19 V
Answer» B. 1.9 kV

Discussion

No Comment Found

Related MCQs

What is the value of pole pitch (in SI unit) for mean air gap radius= 0.5mm and P=4?
What is the value of Np in an average coil emf equation, for 10 armature conductors with 2 parallel paths?a) 2b) 3c) 2.5d) 4 9.What is the torque equation in terms of B, Ic, l, Zr (r= mean air gap radius)?
Emf and torque produced in a DC machine are proportional to ________ and _________ respectively.
What is the average coil emf generated in a 4-pole DC machine having flux/pole equal to 0.1 wb rotating at 1500 rpm? (No. of coil sides = 100)
Average coil emf for 20 coil turns (E1) and 40 coil turns (E2), will have ratio E1/E2=____ (assuming all other parameters same for both machines).
Emf produced by DC machine, for zero armature current (E1) and non-zero armature current (E2) can be related as__________
In a DC machine, average energy stored in the magnetic field remains constant independent of the armature rotation.
Nature of the flux density wave in the air gap is__________ (for armature current equal to 0)
In which mode machine is operating, given that conductor current is in the same direction of conductor emf?