1
GATE EE 2000
MCQ (Single Correct Answer)
+2
-0.6
A permanent magnet dc commutator motor has a no load speed of 6000 rpm when connected to a 120V dc supply. The armature resistance is 2.5 ohms and other losses may be neglected. The speed of the motor with supply voltage of 60V developing a torque 0.5 Nm, is:
2
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:
3
GATE EE 1999
MCQ (Single Correct Answer)
+2
-0.6
A DC shunt motor is running at 1200 rmp, when excited with 220 V DC.
Neglecting the losses and saturation, the speed of the motor when connected to a
175 V DC supply is:
4
GATE EE 1998
MCQ (Single Correct Answer)
+2
-0.6
A 240 V d.c. shunt motor with an armature resistance of 0.5 $$\Omega$$ has a full load
current of 40 A. Find the ratio of the stalling torque to the full load torque when a
resistance of 1 $$\Omega$$ is connected in series with the armature?
Questions Asked from D.C Machines (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
GATE EE 2024 (1)
GATE EE 2022 (1)
GATE EE 2018 (1)
GATE EE 2017 Set 2 (2)
GATE EE 2017 Set 1 (2)
GATE EE 2016 Set 1 (1)
GATE EE 2015 Set 1 (2)
GATE EE 2015 Set 2 (1)
GATE EE 2014 Set 2 (1)
GATE EE 2014 Set 3 (1)
GATE EE 2014 Set 1 (1)
GATE EE 2012 (1)
GATE EE 2011 (1)
GATE EE 2010 (2)
GATE EE 2009 (1)
GATE EE 2008 (2)
GATE EE 2006 (1)
GATE EE 2005 (3)
GATE EE 2004 (2)
GATE EE 2003 (1)
GATE EE 2002 (1)
GATE EE 2001 (1)
GATE EE 2000 (2)
GATE EE 1999 (1)
GATE EE 1998 (2)
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