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?
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
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
Questions Asked from D.C Machines (Marks 1)
Number in Brackets after Paper Indicates No. of Questions
GATE EE 2022 (1)
GATE EE 2018 (1)
GATE EE 2016 Set 1 (1)
GATE EE 2015 Set 2 (2)
GATE EE 2015 Set 1 (1)
GATE EE 2014 Set 3 (1)
GATE EE 2011 (1)
GATE EE 2007 (1)
GATE EE 2006 (1)
GATE EE 2002 (1)
GATE EE 2001 (1)
GATE EE 2000 (3)
GATE EE 1999 (1)
GATE EE 1996 (3)
GATE EE 1995 (1)
GATE EE 1993 (1)
GATE EE 1992 (1)
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits