1
GATE EE 1998
MCQ (Single Correct Answer)
+1
-0.3
The magnetizing current in a transformer is rich in
2
GATE EE 1998
MCQ (Single Correct Answer)
+1
-0.3
The efficiency of a 100 kVA transform is 0.98 at full as well as at half load. For
this transformer at full load the copper loss.
3
GATE EE 1998
MCQ (Single Correct Answer)
+1
-0.3
A 3-phase squirrel cage induction motor has a full load efficiency of 0.8 and a
maximum efficiency of 0.9. It is operated at a slip of 0.6 by applying a reduced
voltage. The efficiency of the motor at this operating point is:
4
GATE EE 1998
MCQ (Single Correct Answer)
+2
-0.6
A 50 Hz transformer having equal hysteresis and eddy current losses at rated
excitation is operated at 45 Hz at 90% of its rated voltage. Compared to rated
operating point, the core losses under this condition:
Paper analysis
Total Questions
Analog Electronics
5
Control Systems
7
Digital Electronics
5
Electric Circuits
8
Electrical and Electronics Measurement
5
Electrical Machines
11
Electromagnetic Fields
3
Engineering Mathematics
6
Power Electronics
5
Power System Analysis
11
Signals and Systems
1
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