1
GATE EE 2001
MCQ (Single Correct Answer)
+2
-0.6
A star-connected 440 V, 50 Hz alternators has per phase synchronous reactance
of 10 Ω. It supplies a balanced capacitive load current of 20 A, as shown in the
per phase equivalent circuit of Figure. It is desirable to have zero voltage
regulation. The load power factor should be
2
GATE EE 2000
MCQ (Single Correct Answer)
+2
-0.6
A single-phase, 2000 V alternator has armature resistance and reactance of 0.8
ohms and 4.94 ohms respectively. The voltage regulation of the alternator at
100 A load at 0.8 leading power-factor is:
3
GATE EE 1999
MCQ (Single Correct Answer)
+2
-0.6
A three phase alternator is wound with a 60 degree phase-spread armature
windings and develops 300 kVA. If the armature is reconnected utilizing all the
coils for single phase operation with a phase spread of 180 degrees, the new
rating of the machine is
4
GATE EE 1998
MCQ (Single Correct Answer)
+2
-0.6
The armature of a single phase alternator is completely wound with T single turn
coils distributed uniformly. The induced voltage in each turn is 2 Volts (rms). The emf
of the whole winding is
Questions Asked from Synchronous Machines (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
GATE EE 2017 Set 2 (3)
GATE EE 2017 Set 1 (1)
GATE EE 2016 Set 1 (1)
GATE EE 2015 Set 2 (1)
GATE EE 2014 Set 3 (1)
GATE EE 2014 Set 2 (3)
GATE EE 2014 Set 1 (1)
GATE EE 2011 (1)
GATE EE 2010 (2)
GATE EE 2009 (1)
GATE EE 2008 (2)
GATE EE 2007 (2)
GATE EE 2006 (3)
GATE EE 2005 (2)
GATE EE 2004 (6)
GATE EE 2003 (1)
GATE EE 2002 (1)
GATE EE 2001 (1)
GATE EE 2000 (1)
GATE EE 1999 (1)
GATE EE 1998 (1)
GATE EE 1997 (1)
GATE EE 1993 (3)
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