1
GATE EE 2012
+1
-0.3
The average power delivered to an impedance $$\left(4-j3\right)$$ Ω by a current $$5\cos\left(100\mathrm{πt}+100\right)\;A$$ is
A
44.2 W
B
50 W
C
62.5 W
D
125 W
2
GATE EE 2012
+1
-0.3
A two phase load draws the following phase currents: $$i_1\left(t\right)=I_m\sin\left(\omega t-\phi_1\right)$$, $$i_2\left(t\right)=I_m\cos\left(\omega t-\phi_2\right)$$. These currents are balanced if $$\phi_1$$ is equal to
A
-$$\phi_2$$
B
$$\phi_2$$
C
$$\left(\mathrm\pi/2\;-\;{\mathrm\phi}_2\right)$$
D
$$\left(\mathrm\pi/2\;+\;{\mathrm\phi}_2\right)$$
3
GATE EE 2011
+1
-0.3
The r.m.s value of the current i(t) in the circuit shown below is A
$$\frac12A$$
B
$$\frac1{\sqrt2}A$$
C
1 A
D
$$\sqrt2\;A$$
4
GATE EE 2011
+1
-0.3
The voltage applied to a circuit is $$100\sqrt2\cos\left(100\mathrm{πt}\right)$$ volts and the circuit draws a current of $$10\sqrt2\;\sin\left(100\mathrm{πt}+\mathrm\pi/4\right)$$ amperes. Taking the voltage as the reference phasor, the phasor representation of the current in amperes is
A
$$10\sqrt2\;\angle-\mathrm\pi/4$$
B
$$10\;\angle-\mathrm\pi/4$$
C
$$10\;\angle+\mathrm\pi/4$$
D
$$10\sqrt2\;\angle+\mathrm\pi/4$$
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits
Electrical and Electronics Measurement
EXAM MAP
Joint Entrance Examination