1
GATE EE 2015 Set 2
+1
-0.3
A 3-phase balanced load which has a power factor of 0.707 is connected to a balanced supply. The power consumed by the load is 5 kW. The power is measured by the two-wattmeter method. The readings of the two wattmeters are
A
3.94 kW and 1.06 kW
B
2.50 kW and 2.50 kW
C
5.00 kW and 0.00 kW
D
2.96 kW and 2.04 kW
2
GATE EE 2014 Set 1
+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
$${\pi \over 3}$$
3
GATE EE 2014 Set 3
Numerical
+1
-0
An $$LPF$$ wattmeter of power factor $$0.2$$ is having three voltage settings $$300V,$$ $$150V$$ and $$75V,$$ and two current settings $$5 A$$ and $$10A.$$ The full scale reading is $$150.$$ If the wattmeter is used with $$150V$$ voltage setting and $$10A$$ current setting, the multiplying factor of the wattmeter is __________.
4
GATE EE 2014 Set 2
Numerical
+1
-0
While measuring power of a three-phase balanced load by the two-wattmeter method, the readings are $$100$$ $$W$$ and $$250$$ $$W$$. The power factor of the load is ___________.