1
GATE EE 2001
MCQ (Single Correct Answer)
+2
-0.6
A 3-phase transformer has rating of 20 MVA, 220 kV (star) / 33 kV (delta) with
leakage reactance of 12%. The transformer reactance (in ohms) referred to each
phase of the L.V. delta-connected side is
2
GATE EE 2001
MCQ (Single Correct Answer)
+2
-0.6
The hysteresis loop of a magnetic material has an area of 5 cm2 with the scales
given as 1 cm = 2 AT and 1 cm = 50 mWb. At 50 Hz, the total hysteresis loss is
3
GATE EE 2000
MCQ (Single Correct Answer)
+2
-0.6
A 3-phase delta/star transformer is supplied at 6000 V on the delta-connected
side. The terminal voltage on the secondary side when supplying full load as 0.8
lagging power-factor is 415 V. The equivalent resistance and reactance drops for
the transformer are 1% and 5% respectively. The turn's ratio of the transformer
is:
4
GATE EE 1999
MCQ (Single Correct Answer)
+2
-0.6
A 10 kVA, 400 V/200 V, single phase transformer with a percentage resistance
of 3% and percentage reactance of 6% is supplying a current of 50 A to a
resistive load. The value of the load voltage is:
Questions Asked from Transformers (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
GATE EE 2018 (2)
GATE EE 2017 Set 1 (1)
GATE EE 2017 Set 2 (1)
GATE EE 2016 Set 2 (2)
GATE EE 2016 Set 1 (3)
GATE EE 2015 Set 1 (2)
GATE EE 2015 Set 2 (3)
GATE EE 2014 Set 1 (1)
GATE EE 2014 Set 3 (4)
GATE EE 2014 Set 2 (1)
GATE EE 2013 (1)
GATE EE 2012 (1)
GATE EE 2010 (1)
GATE EE 2009 (6)
GATE EE 2008 (2)
GATE EE 2007 (1)
GATE EE 2006 (3)
GATE EE 2004 (3)
GATE EE 2003 (3)
GATE EE 2002 (1)
GATE EE 2001 (2)
GATE EE 2000 (1)
GATE EE 1999 (5)
GATE EE 1998 (1)
GATE EE 1997 (2)
GATE EE 1993 (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