1
GATE EE 2017 Set 1
+2
-0.6
The load shown in the figure is supplied by a $$400$$ $$V$$ (line-to-line) $$3$$-phase source ($$RYB$$ sequence). The load is balanced and inductive, drawing $$3464$$ $$VA.$$ When the switch $$S$$ is in position $$N$$, the three watt-meters $${W_1},\,{W_2}$$ and $${W_3}$$ read $$577.35$$ $$W$$ each. If the switch is moved to position $$Y,$$ the readings of the watt-meters in watts will be:
A
$${W_1} = 1732\,\,\,$$ and $$\,\,{W_2} = {W_3} = 0$$
B
$${W_1} = 0,\,\,{W_2} = 1732\,\,\,$$ and $$\,\,\,{W_3} = 0$$
C
$${W_1} = 866,\,\,{W_2} = 0,\,\,\,{W_3} = 866$$
D
$${W_1} = {W_2} = 0$$ and $${W_3} = 1732$$
2
GATE EE 2015 Set 2
Numerical
+2
-0
The coils of a wattmeter have resistances $$0.01$$ $$\Omega$$ and $$1000$$ $$\Omega$$; their inductances may be neglected. The wattmeter is connected as shown in the figure, to measure the power consumed by a load, which draws $$25$$ $$A$$ at power factor $$0.8$$. The voltage across the load terminals is $$30$$ $$V$$. The percentage error on the wattmeter reading is______________.
3
GATE EE 2009
+2
-0.6
The figure shows a three phase delta connected load supplied from a $$400V,$$ $$50Hz,$$ $$3\phi$$ balanced source. The pressure coil and current coil of a wattmeter are connected to the load as shown. With the coil polarities suitably selected to ensure a positive deflection. The wattmeter reading will be.
A
$$0$$
B
$$1600$$ Watt
C
$$800$$ Watt
D
$$400$$ Watt
4
GATE EE 2007
+2
-0.6
A $$3$$ $$V$$ $$dc$$ supply with an internal resistance of $$2\,\,\Omega$$ supplies a passive non-linear resistance characterized by the relation $${V_{NL}} = {\rm I}_{NL}^2.$$ The power dissipated in the non-linear resistance is
A
$$1.0$$ $$W$$
B
$$1.5$$ $$W$$
C
$$2.5$$ $$W$$
D
$$3.0$$ $$W$$
EXAM MAP
Medical
NEET