EEE :: A.C Fundamentals, Circuits and Circuit Theory
- The r.m.s. value of pure cosine function is
- The phosphors for which of the following pair are 180° out of phase for VL, VC and VR?
- The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be
- In an AC. circuit, a low value of kVAR compared with kW indicates
- If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is
- If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave?
- The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is
- What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value?
- The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of
- Power factor of an inductive circuit is usually improved by connecting capacitor to it in
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