SSC JE AC fundamental Quiz 29

A sine wave having voltage equation as  V. Its instantaneous voltage value at is

A coil having resistance of 30Ω in series with an inductance of 5mH is connected to 200V, 50 Hz supply. What will be the equivalent current & power factor of the circuit?

What will be the frequency (in Hz) of a sinusoidal waveform, when the time period of the wave is 25 ms?

What will be the value of inductance (in mH) connected in series with a capacitance of 4 F in a series RLC circuit having a quality factor 2, when the resonant frequency is 6 rad/sec?

What will be the resonant frequency (in kHz) of a tank circuit when the capacitance and inductance of the circuit is 0.04 mF and 0.04 mH respectively?

What will be the instantaneous value of the alternating current (in A) which is represented by  when the value of t is 5?

The capacitive reactance of a circuit is 60 Ohms, when it is supplied with a 50 Hz supply. What will be the value of capacitive reactance (in Ohms) of the same circuit, if it is supplied with a 60 Hz supply?

What is the value of the total impedance (in ohms) of a tank circuit working at resonant frequency having a capacitance of 0.01 mF and an inductance of 0.01 mH?

What is the peak value of the alternating voltage (in V) having an average value of 180 V?