1
GATE EE 2022
Numerical
+1
-0.33
A star-connected 3-phase, 400 V, 50 kVA, 50 Hz synchronous motor has a synchronous reactance of 1 ohm per phase with negligible armature resistance. The shaft load on the motor is 10 kW while the power factor is 0.8 leading. The loss in the motor is 2 kW. The magnitude of the per phase excitation emf of the motor, in volts, is ________. (round off to nearest integer).
Your input ____
2
GATE EE 2018
MCQ (Single Correct Answer)
+1
-0.3
In a salient pole synchronous motor, the developed reluctance torque attains the maximum
value when the load angle in electrical degrees is
3
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
4
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 ____
Questions Asked from Synchronous Machines (Marks 1)
Number in Brackets after Paper Indicates No. of Questions
GATE EE 2022 (1)
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
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits