1
GATE EE 2010
MCQ (Single Correct Answer)
+2
-0.6
A balanced star-connected and purely resistive load is connected at the secondary
of a star-delta transformer as shown in the figure. The line-to-line voltage rating of
the transformer is 110 V/220 V. Neglecting the non-idealities of the transformer, the
impedance 'Z' of the equivalent star-connected load, referred to the primary side of
the transformer, is
![GATE EE 2010 Electrical Machines - Transformers Question 58 English](https://gateclass.cdn.examgoal.net/examside/questions/07216ea2bb4495b59e98899d60125946086e5629e0213e8031ff24025e84f40c.jpg)
![GATE EE 2010 Electrical Machines - Transformers Question 58 English](https://gateclass.cdn.examgoal.net/examside/questions/07216ea2bb4495b59e98899d60125946086e5629e0213e8031ff24025e84f40c.jpg)
2
GATE EE 2010
MCQ (Single Correct Answer)
+1
-0.3
A balanced three-phase voltage is applied to a star-connected induction motor, the
phase to neutral voltage being V. The stator resistance, rotor resistance referred
to the stator, stator leakage reactance, rotor leakage reactance referred to the
stator, and the magnetizing reactance are denoted by $$r_s,\;r_r,\;r_s,\;r_r\;and\;X_m$$,
respectively. The magnitude of the starting current of the motor is given by
3
GATE EE 2010
MCQ (Single Correct Answer)
+2
-0.6
A separately excited $$dc$$ machine is coupled to a $$50Hz,$$ three-phase, 4-pole induction machine as shown in the figure. The dc machine is energized first and the machines rotate at $$1600$$ $$rpm.$$ Subsequently the induction machine is also connected to a $$50Hz,$$ three-phase source, the phase sequence being consistent with the direction of rotation. In steady state
![GATE EE 2010 Electrical Machines - Synchronous Machines Question 27 English](https://gateclass.cdn.examgoal.net/ASgxIRN1wrh5xqLo3/hZsZo4XhDhdWxKjiQolVOs8t9zGb3/Nt40Nyl9p4DHbk3UbVuTZI/uploadfile.jpg)
4
GATE EE 2010
MCQ (Single Correct Answer)
+2
-0.6
A $$50$$ $$Hz$$ synchronous generator is initially connected to a long lossless transmission line which is open circuited at the receiving end. With the field voltage held constant, the generator is disconnected from the transmission line. Which of the following may be said about the steady state terminal voltage and field current of the generator?
Paper analysis
Total Questions
Analog Electronics
4
Control Systems
4
Digital Electronics
4
Electric Circuits
5
Electrical and Electronics Measurement
3
Electrical Machines
7
Electromagnetic Fields
1
Engineering Mathematics
8
Power Electronics
5
Power System Analysis
10
Signals and Systems
8
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