Q. A circuit is fed by two sources of different frequency and magnitudes 100 ∠0° V and 50 ∠30°V. The current in a particular branch is 10 ∠20° A. If the magnitudes of the sources are changed to 200 ∠0° V and 100 ∠0° V, the current in that branch should be

View solution

Q. In gases the flow of current is due to

View solution

Q. A nickel cadmium cell is an alkaline cell.

View solution

Q. When analysing two port networks in parallel it is more convenient to use

View solution

Q. In ZRC (s) = 0 at s = ∞, the last element in first Cauer form is

View solution

Q. The function H (s) is positive real if

View solution

Q. In most electric irons, the thermister used for controlling temperature is

View solution

Q. In the voltage equation v = 500 sin (1000t) V, the rms value of voltage is

View solution

Q. A parallel ac circuit in resonance will

View solution

Q. For a full rectified sine wave, the form factor and peak factor respectively are

View solution

Q. For an RC admittance function Y,

View solution

Q. When ac current is zero, no electrons are in motion.

View solution

Q. A two port network is said to be reciprocal if

View solution

Q. For the current wave i = 10 + 10 sin θ, the rms value is

View solution

Q. The impedance parameter z21 is

View solution

Q. Measurement of an unknown voltage with a dc potentiometer loses its advantage of open circuit measurement when

View solution

Q. A parallel resonant circuit can be used

View solution

Q. Which of the following theorems enables a number of voltage (or current) sources to be combined directly into a single voltage (or current) source?

View solution

Q. If the numerator of Z(s) is one degree higher than denominator, Z(s) has a pole at infinity.

View solution

Q. An m derived low pass filter has fc = 1000 Hz, f∞ = 1250 Hz and m = 0.6. If m is increased, then

View solution