1
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
Figure shows an ideal single-phase transformer. The primary and secondary
coils are wound on the core as shown. Turns ratio $$\left(\frac{N_1}{N_2}\right)$$=2.
The correct phasors
of voltages $$E_1,\;E_2$$ currents $$I_1,\;I_2$$ and core flux $$\phi$$ are as shown in
![GATE EE 2003 Electrical Machines - Transformers Question 54 English](https://gateclass.cdn.examgoal.net/examside/questions/3fd35e81ed53c0f6580087a9567b2419369b9cb1e0b12e62ff0eea15942d8c63.jpg)
![GATE EE 2003 Electrical Machines - Transformers Question 54 English](https://gateclass.cdn.examgoal.net/examside/questions/3fd35e81ed53c0f6580087a9567b2419369b9cb1e0b12e62ff0eea15942d8c63.jpg)
2
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
Figure shows a $$\triangle$$ - Y connected 3-phase
distribution transformer used to step down
the voltage from 11000 V to 415 V line-to line.
It has two switches S1 and S2. Under
normal conditions S1 is closed and S2 is
open. Under certain special conditions S1 is
open and S2 is closed. In such a case the
magnitude of the voltage across the LV
terminals a and c is
![GATE EE 2003 Electrical Machines - Transformers Question 52 English](https://gateclass.cdn.examgoal.net/examside/questions/27e4079bab4c9c53046794b113b38105f70b57afc174d659ea2853a977646caf.jpg)
![GATE EE 2003 Electrical Machines - Transformers Question 52 English](https://gateclass.cdn.examgoal.net/examside/questions/27e4079bab4c9c53046794b113b38105f70b57afc174d659ea2853a977646caf.jpg)
3
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
Figure shows an ideal three-winding transformer. The three windings 1,2,3 of
the transformer are wound on the same core as shown. The turn's ratio N1:N2:N3
is 4:2:1. A resistor of 10 Ω is connected across winding-2. A capacitor of
reactance 2.5 Ω is connected across winding-3. Winding-1 is connected across a
400 V, ac supply. If the supply voltage phasor $$\overline V=400\angle0^\circ$$, the supply current
phasor $${\overline I}_1$$ is given by
![GATE EE 2003 Electrical Machines - Transformers Question 53 English](https://gateclass.cdn.examgoal.net/examside/questions/469c469ac5adcd85e553d27e5afe38b994b17d9f43a0946e97cd06db68e5b760.jpg)
![GATE EE 2003 Electrical Machines - Transformers Question 53 English](https://gateclass.cdn.examgoal.net/examside/questions/469c469ac5adcd85e553d27e5afe38b994b17d9f43a0946e97cd06db68e5b760.jpg)
4
GATE EE 2003
MCQ (Single Correct Answer)
+1
-0.3
Group I lists different applications and Group II lists the motors for these
applications. Match the application with the most suitable motor and choose the
right combination among the choices given there after:
Group I
P. Food mixer
Q. Cassette tape recorder
R. Domestic water pump
S. Escalator
Group II
1. Permanent magnet dc motor
2. Single phase induction motor
3. Universal motor
4. Three phase induction motor
5. DC series motor
6. Stepper motor
Paper analysis
Total Questions
Analog Electronics
8
Control Systems
10
Digital Electronics
5
Electric Circuits
10
Electrical and Electronics Measurement
10
Electrical Machines
14
Electromagnetic Fields
4
Power Electronics
7
Power System Analysis
17
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