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
A
GATE EE 2003 Electrical Machines - Transformers Question 54 English Option 1
B
GATE EE 2003 Electrical Machines - Transformers Question 54 English Option 2
C
GATE EE 2003 Electrical Machines - Transformers Question 54 English Option 3
D
GATE EE 2003 Electrical Machines - Transformers Question 54 English Option 4
2
GATE EE 2002
MCQ (Single Correct Answer)
+2
-0.6
A 400V/200V/200V, 50 Hz three winding transformer is connected as shown in Figure. The reading of the voltmeter 'V' will be GATE EE 2002 Electrical Machines - Transformers Question 51 English
A
0 V
B
400 V
C
600 V
D
800 V
3
GATE EE 2001
MCQ (Single Correct Answer)
+2
-0.6
The hysteresis loop of a magnetic material has an area of 5 cm2 with the scales given as 1 cm = 2 AT and 1 cm = 50 mWb. At 50 Hz, the total hysteresis loss is
A
15 W
B
20 W
C
25 W
D
50 W
4
GATE EE 2001
MCQ (Single Correct Answer)
+2
-0.6
A 3-phase transformer has rating of 20 MVA, 220 kV (star) / 33 kV (delta) with leakage reactance of 12%. The transformer reactance (in ohms) referred to each phase of the L.V. delta-connected side is
A
23.5
B
19.6
C
18.5
D
8.7
GATE EE Subjects
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