ISRO Scientist or Engineer Electrical 2015
For the following questions answer them individually
The output voltage of the ideal transformer with polarities and dots shown in the figure is given by
The average real power in watts delivered to a load impedance $$ZL = (4 - J2)Ω$$ by an ideal current source $$i(t) = 4 \sin(\omega t + 20^\circ)A$$ is
A network contains B branches and N Nodes. The number of mesh current equations would be
A sinusoidal voltage $$V = 50 \sin \omega t$$ is applied to a series RL circuit. The currentin the circuit is given by $$I = 25 \sin(\omega t - 53^\circ)$$. The apparent power consumed by the load is
A bulb in staircase has two switches, one switch being at the ground floor and the other being at first floor. The bulb can be turned ON and also OFF by any one of the switch
irrespective of the state of the other switch. The logic of switching of bulb resembles
Time domain expressionsfor the voltage $$V_1(t)$$ and $$V_2(t)$$ is given by
$$V_1(t) = V_m \sin(10 t - 130^\circ)$$ and $$V_2(t) = V_m \cos(10 t + 10^\circ)$$ which is the correct statement
The anticlockwise direction of rotation of phasor may be taken as positive.
