SSC JE Electrical Engineering 4th March 2017 Shift-2
For the following questions answer them individually
For the AC circuit as shown below,if the rms voltage across the resistor is 120 V, what is the value of the inductor?
The R-L circuit of the figure is fed from a constant magnitude variable frequency sinusoidal voltage source v_in. At 100 Hz, the R and L element each has a voltage drop $$U_{rms}$$. If the frequency of the source is changed to 50 Hz, then new voltage drop across R is:-
A certain R-L series combination is connected across a 50 Hz single-phase ac supply. If the instantaneous power drawn was found to be negative for 2 milliseconds in one cycle, the power factor angle of the circuit must be _____.
The voltage phaser of a circuit is $$10\angle15^\circ V$$ and the current phasor is $$2 \angle -45^\circ A$$. The active and reactive powers in the circuit are _____.
In an RLC circuit, supplied from an ac source, the reactive power is 1) average energy stored in the electric field
The insulation resistance of a cable of length 10 km is $$1 MΩ$$. For a length of 100 km of same cable, the insulation resistance will be _____.
All the resistances in figure shown below are $$1Ω$$ each. The value of current ‘I’ is:-
