ESE Technical Quiz 7

Under ideal consideration for circuit components, input impedance seen is _________Ω.

Open loop transfer function of unity negative feedback system is . The closed loop system is

For a phase lead compensator, the corner frequencies are 5 rad/sec and 10 rad/sec. The maximum phase lead angle occurs at

A 3-bit parallel full adder without any initial carry requires:

A salient pole synchronous generator has the following per unit parameters X_d = 0.8, X_q = 0.6 and R_a = 0.1 . If the generator is delivering rated kVA at rated voltage at pf 0.8(lead). The load angle will be

A transformer has hysteresis and eddy current loss of 800 W and 400 W respectively, when connected to 600 V, 50 Hz supply. If the supply voltage is raised to 1200 V and frequency to 100 Hz, then the losses will be

Consider the following statements:

1. In a charge free region, Maxwell equations can be reduced to two.

2. The reduced equations are of the form

Where A can be  or

Which of the above statements is/are correct?

Choose the correct option:

1.

2.

3.

4.

Switches that can handle reverse current is/are:

The spectrum X(ω) of a continuous time signal x(t) is shown as

Consider a signal x(t) having:

RMS value =

Average value =

Where, V_m = Peak Value

Then

1. From factor =

2. Peak factor =

The correct option is