1
GATE EE 2014 Set 2
MCQ (Single Correct Answer)
+2
-0.6
For a single phase, two winding transformer, the supply frequency and voltage are both
increased by 10%. The percentage changes in the hysteresis loss and eddy current loss,
respectively are
2
GATE EE 2014 Set 2
MCQ (Single Correct Answer)
+1
-0.3
In a constant V/f control of induction motor, the ratio V/f is maintained constant from 0 to
base frequency, where V is the voltage applied to the motor at fundamental frequency f.
Which of the following statements relating to low frequency operation of the motor is TRUE?
3
GATE EE 2014 Set 2
MCQ (Single Correct Answer)
+1
-0.3
A three-phase, 4-pole, self excited induction generator is feeding power to a load at a
frequency $$f_1$$. If the load is partially removed, the frequency becomes $$f_2$$. If the speed of the
generator is maintained at 1500 rpm in both the cases, then
4
GATE EE 2014 Set 2
MCQ (Single Correct Answer)
+2
-0.6
A three-phase slip-ring induction motor, provided with a commutator winding, is shown in
the figure. The motor rotates in clockwise direction when the rotor windings are closed.
If the rotor winding is open circuited and the system is made to run at rotational speed fr with
the help of prime-mover in anti-clockwise direction, then the frequency of voltage across slip
rings is f1 and frequency of voltage across commutator brushes is f2. The values of f1 and f2
respectively are
![GATE EE 2014 Set 2 Electrical Machines - Induction Machines Question 35 English](https://gateclass.cdn.examgoal.net/examside/questions/8f403c9c2a049c2fd6776eb30501f3d5a62a5617000ed52bf0c0fbe06c091e46.jpg)
Paper analysis
Total Questions
Analog Electronics
4
Control Systems
5
Digital Electronics
3
Electric Circuits
4
Electrical and Electronics Measurement
4
Electrical Machines
10
Electromagnetic Fields
2
Engineering Mathematics
8
Power Electronics
4
Power System Analysis
5
Signals and Systems
5
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