1
GATE EE 2015 Set 1
MCQ (Single Correct Answer)
+1
-0.3
A separately excited DC generator has an armature resistance of 0.1 $$\Omega$$ and negligible armature inductance. At rated field current and rated rotor speed, its open-circuit voltage is 200 V. When this generator is operated at half the rated speed, with half the rated field current, an un-charged 1000 μF capacitor is suddenly connected across the armature terminals. Assume that the speed remains unchanged during the transient. At what time (in microsecond) after the capacitor is connected will the voltage across it reach 25 V?
A
62.25
B
69.3
C
73.25
D
77.3
2
GATE EE 2014 Set 3
Numerical
+1
-0
The no-load speed of a 230 V separately excited dc motor is 1400 rpm. The armature resistance drop and the brush drop are neglected. The field current is kept constant at rated value. The torque of the motor in Nm for an armature current of 8 A is ____________.
Your input ____
3
GATE EE 2011
MCQ (Single Correct Answer)
+1
-0.3
A 4–point starter is used to start and control the speed of a
A
dc shunt motor with armature resistance control
B
dc shunt motor with field weakening control
C
dc series motor
D
dc compound motor
4
GATE EE 2007
MCQ (Single Correct Answer)
+1
-0.3
The dc motor, which can provide zero speed regulation at full load without any controller is
A
series
B
shunt
C
cumulative compound
D
differential compound
GATE EE Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12