1
GATE EE 2017 Set 2
MCQ (Single Correct Answer)
+1
-0.3
If a synchronous motor is running at a leading power factor, its excitation induced voltage (Er) is
2
GATE EE 2017 Set 1
Numerical
+1
-0
A three-phase, 50Hz, star-connected cylindrical-rotor synchronous machine is running as a
motor. The machine is operated from a 6.6 kV grid and draws current at unity power factor
(UPF). The synchronous reactance of the motor is 30 Ω per phase. The load angle is $$30^\circ$$. The
power delivered to the motor in kW is _______.
Your input ____
3
GATE EE 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
In a synchronous machine, hunting is predominantly damped by
4
GATE EE 2014 Set 1
Numerical
+1
-0
A star connected 400 V, 50 Hz, 4 pole synchronous machine gave the following open circuit
and short circuit test results:
Open circuit test: VOC = 400 V (rms, line–to–line) at field current, If = 2.3 A
Short circuit test: ISC = 10 A(rms, phase) at field current, If =1.5 A
The value of per phase synchronous impedance in Ω at rated voltage is __________.
Open circuit test: VOC = 400 V (rms, line–to–line) at field current, If = 2.3 A
Short circuit test: ISC = 10 A(rms, phase) at field current, If =1.5 A
The value of per phase synchronous impedance in Ω at rated voltage is __________.
Your input ____
Questions Asked from Synchronous Machines (Marks 1)
Number in Brackets after Paper Indicates No. of Questions
GATE EE 2018 (1)
GATE EE 2017 Set 2 (1)
GATE EE 2017 Set 1 (1)
GATE EE 2014 Set 3 (1)
GATE EE 2014 Set 1 (1)
GATE EE 2011 (1)
GATE EE 2008 (2)
GATE EE 2007 (1)
GATE EE 2006 (1)
GATE EE 2005 (1)
GATE EE 2004 (2)
GATE EE 2003 (2)
GATE EE 2001 (3)
GATE EE 2000 (1)
GATE EE 1999 (1)
GATE EE 1998 (1)
GATE EE 1996 (2)
GATE EE 1995 (1)
GATE EE 1992 (2)
GATE EE Subjects
Electric Circuits
Electromagnetic Fields
Signals and Systems
Electrical Machines
Engineering Mathematics
General Aptitude
Power System Analysis
Electrical and Electronics Measurement
Analog Electronics
Control Systems
Power Electronics