Q. The current through a resistance R is shown in figure. The computed value of power is

View solution

Q. What would be the reading of voltmeter as shown in below figure. The voltmeter has a 0-1 V scale and is a 20000 Ω/V meter

View solution

Q. Figure shows a Wheatstone bridge with RTD to one arm. If resistance of RTD = 1020 Ω, the voltage V0 is

View solution

Q. The ac bridge in figure is balanced. Z1 = 100∠30°, Z2 = 150∠0°, Z3 = 250∠ - 40° Then Z4 =

View solution

Q. In bridge circuit of figure, equivalent resistance between A and B is

View solution

Q. Which of the following closely represents the resistance-temperature characteristics of thermistor?

View solution

Q. In figure the output V0 is

View solution

Q. If n measurements of a quantity are made, the arithmetic mean is

View solution

Q. The standard deviation σ in terms of n observations having deviations from mean dm can be written as

View solution

Q. In figure, C0 is distributed capacitance and C is tuning capacitor. If C = C1 for fundamental frequency and C = C2 for second harmonic, then C0 =

View solution

Q. If M is mutual inductance between fixed and moving coils and θ is deflection of dynamometer instrument, then

View solution

Q. If σ is standard deviation, variation is

View solution

Q. An average responding voltmeter using full wave rectifier has been calibrated to read 1 V for 1 V rms sinusoidal input. For 1 V peak to peak square wave input, the meter reading will be

View solution

Q. For critical damping, the resistance in D'Arsonval galvanometer circuit should be equal to

View solution

Q. In figure, the reading of wattmeter will be proportional

View solution

Q. Figure shows the equivalent circuit of resistor. The resistor is non-inductive when

View solution

Q. The damping ratio, in D'Arsonval galvanometer is equal to

View solution

Q. If φsh is flux of shunt magnet, φse is flux of series magnet, ish is eddy current due to φse, the torque in an induction wattmeter is proportional to

View solution

Q. If Eb is the potential of accelerating anode, the energy of electrons as they emerge from electron gun is proportional to

View solution

Q. The circuit of figure is used to measure the value Rx. Ammeter resistance Ra = 0.1 Ω voltmeter resistance Rv = 5000 Ω. It Rx1 and Rx2, are the measured values of Rx with switch in position 1 and 2, the mean of Rx1, and Rx2, is

View solution