SSC JE Electrical Engineering 2012
For the following questions answer them individually
Match the items given in List-I (Material) and those in List-II (Temperature Coefficient of Resistance). Select your answers using codes given in the lists
A $$10 \mu F$$ and a $$20 \mu F$$ capacitor are in series. The combination is supplied at 150 V from a sinusoidal voltage source. The voltage across the $$20 \mu F$$ capacitor is then
The conditions at which the following potential divider is independent of frequency, may be
(i) $$\frac{R_1}{R_2} = \frac{C_1}{C_2}$$
(ii) $$\frac{R_1}{R_2} = \frac{C_2}{C_1}$$
(iii) $$R_1C_1 << 1, R_2C_2 << 1$$
(iv) $$R_1 + R_2 = \frac{1}{C_1} + \frac{1}{C_2}$$
The wave shape of current flowing through an inductor is
The wave shape of voltage drop (v) across the inductor is
Two wires A and B of the same material but of different lengths L and 2L have the radius r and 2r respectively. The ratio of specific resistance will be
A 20 micro farad capacitor is connected across an ideal voltage source. The current in the capacitor
