1
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
A water boiler at home is switched on to the $$A.C$$ mains supplying power at $$230$$ $$V/50$$ $$Hz.$$ The frequency of instantaneous power consumed by the boiler is
A
$$0$$ $$Hz$$
B
$$50$$ $$Hz$$
C
$$100$$ $$Hz$$
D
$$150$$ $$Hz$$
2
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
The moving coil in a dynamometer wattmeter is connected
A
in series with the fixed coil
B
across the supply
C
in series with the load
D
across the load
3
GATE EE 1993
MCQ (Single Correct Answer)
+1
-0.3
VRN, VYN and VBN are the instantaneous line to neutral voltages and iR, iY and iB are instantaneous line currents in a balanced three-phase circuit, the computation, VRN (iy $$-$$ iB) $$-$$ (VYN $$-$$ VBN) iR will yield a quantity proportional to
A
The active power
B
The power factor
C
The reactive power
D
The complex power
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