BARC EE : Full Syllabus Test - 19

A 3-ϕ, 1000V, star-connected synchronous generator is normally exited. The load angle of alternator is 30°. Then voltage regulation will be :

The frequency range of a commercially broadcast FM signal is 88 to 108 MHz with carrier swing of 150 kHz. What will be the percentage modulation of signal?

(Assume that FCC standard for maximum frequency deviation of FM broadcast signal is 90 kHz)

For a single machine infinite BUS system, if P_e = 2sinδ p.u. at δ = 30°, synchronizing power coefficient is ________.

A 240 V, DC shunt is running at 1000 rpm when connected to rated supply. If the motor is now connected to 200 V supply, then the speed of the motor will be (neglect losses and saturation).

The full load voltage regulation of an alternator is 6 % at 0.8 p.f. lagging and at rated speed of 1200 rpm. Its full load regulation at 0.8 p.f. lagging and at 1100 rpm would be (assume negligible armature resistance).

A chopper, whose voltage as well as current remain negative, is known as:-

The Fourier transform of is then Fourier transform of is

Probability that the number of required tosses is odd when a fair coin is tossed till a heal appear for the first time

A signal x(t) = 50 + 10 sin(800t) + 5 cos(800t) is sampled and reproduced from its samples. What is the maximum allowable time between samples?

Choose the correct option. For full transported transmission line:

1. Z_positive = j(X_s + 2X_m)

2. Z_zero = j(X_s – X_m)

For 3-ϕ induction motor, maximum torque is two times of full load torque and starting torque is equal to full load torque. Slip value corresponding to maximum torque is ________ %

The given figure shows a step-down chopper switched at 1 KHz with a duty ratio α = 30%. The peak-peak ripple in the load current is close to

For a symmetrical square wave of 800 V peak to peak and for ideal diode, the voltmeter in the given figure will read