1
GATE EE 2014 Set 1
MCQ (Single Correct Answer)
+1
-0.3
Power consumed by a balanced $$3$$-phase, $$3$$-wire load is measured by the two wattmeter method. The first wattmeter reads twice that of the second. Then the load impedance angle in radians is
A
$${\pi \over 2}$$
B
$${\pi \over 8}$$
C
$${\pi \over 6}$$
D
$${\pi \over 3}$$
2
GATE EE 2014 Set 1
MCQ (Single Correct Answer)
+1
-0.3
In an oscilloscope screen, linear sweep is applied at the
A
Vertical axis
B
Horizontal axis
C
Origin
D
Both horizontal and vertical axis
3
GATE EE 2014 Set 1
MCQ (Single Correct Answer)
+2
-0.6
A three phase synchronous generator is to be connected to the infinite bus. The lamps are connected as shown in the figure for the synchronization. The phase sequence of bus voltage is $$R$$-$$Y$$-$$B$$ and that of incoming generator voltage is $$R'$$ - $$Y'$$ - $$B'.$$ GATE EE 2014 Set 1 Electrical Machines - Synchronous Machines Question 27 English

It was found that the lamps are becoming dark in the sequence $${L_a} - {L_b} - {L_c}.$$ It means that the phase sequence of incoming generator is

A
opposite to infinite bus and its frequency is more than infinite bus
B
opposite to infinite bus but its frequency is less than infinite bus
C
same as infinite bus and its frequency is more than infinite bus
D
same as infinite bus and its frequency is less than infinite bus
4
GATE EE 2014 Set 1
Numerical
+1
-0
An 8-pole, 3-phase, 50 Hz induction motor is operating at a speed of 700 rpm. The frequency of the rotor current of the motor in Hz is ________.
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