1
GATE EE 2000
MCQ (Single Correct Answer)
+1
-0.3
The compensating winding in a dc machine
A
is located in armature slots for compensation of the armature reaction
B
is located on commutating poles for improving the commutation
C
is located on pole shoes for avoiding the flashover at the commutator surface
D
is located on poles shoes to avoid the sparking at the brushes.
2
GATE EE 2000
MCQ (Single Correct Answer)
+1
-0.3
Ratio of the rotor reactance X to the rotor resistance R for a two-phase servomotor
A
is equal to that of a normal induction motor
B
is less than that of a normal induction motor
C
is greater than that of a normal induction motor
D
may be less or greater than that of a normal induction motor
3
GATE EE 2000
MCQ (Single Correct Answer)
+1
-0.3
A 1.8° step, 4-phase stepper motor has a total of 40 teeth on 8 poles of stator. The number of rotor teeth for this motor will be
A
40
B
50
C
100
D
80
4
GATE EE 2000
MCQ (Single Correct Answer)
+2
-0.6
A 240 V dc series motor takes 40A when giving its rated output at 1500 rpm. Its resistance is 0.3 ohms. The value of resistance which must be added to obtain rated torque at 1000 rpm is:
A
6 ohms
B
5.7 ohms
C
2.2 ohms
D
1.9 ohms
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
CBSE
Class 12