List of top Electrical Engineering Questions asked in Tamil Nadu Common Entrance Test

A closed-loop system has the characteristic equation given by: $ s^3 + k s^2 + (k+2) s + 3 = 0 $.
For the system to be stable, the value of $ k $ is:

AC machines should have proper _______ in order to limit the operating temperature.

Which of the following defines the FIR filter for length $ M $, input $ x(n) $, and output $ y(n) $?

A system has two zeros and four poles. Then two asymptotes in the root loci plane move towards infinity along:

The output of the following 8051 Assembly code is:

When the MOSFET is in the ON state, the channel of the device behaves like:

The state variable description of a system is: \[ \dot{X} = AX + BU, \quad A = \begin{bmatrix} 0 & 3 \\ 3 & 0 \end{bmatrix} \] The poles of the system are located at:

The duty cycle value of a buck converter when the switching frequency is 250 kHz and the ON time is 2$ \mu s $ is:

The flux set up by the armature current, which does not cross the air gap and takes a different path, is called:

The Impulse Response of an initially relaxed linear system is $ e^{-2t}u(t) $. To produce a response of $ te^{-2t}u(t) $, the input should be:

The 8051 program segment, which performs ‘software polling’ to check if the Timer-0 counting has completed, is:

Time lag for breakdown is:

In a single-phase semi-converter without a freewheeling diode, for discontinuous conduction and extinction angle $ \beta>\pi $, each SCR conducts for the period:

Loop transfer function of a feedback system is: \[ G(s)H(s) = \frac{10}{s - 2} \] Assume the Nyquist contour in the clockwise direction. Then the Nyquist plot of $ G(s) $ encircles $-1 + j0$:

The output of the following program is:

A single-phase inverter has a square wave output voltage. The percentage of the fifth harmonic component in relation to the fundamental component is:

The transfer function of a first-order controller is given as: \[ G_c(s) = K \frac{(s + a)}{(s + b)} \] where $ K, a, b $ are positive real numbers. The condition for this controller to act as a phase lag compensator is:

What is the operation carried out by the 8051 instruction: ‘SETB 0D3’?

The RMS output voltage at fundamental frequency of a single-phase, full-bridge inverter with input voltage of 48V DC, feeding a load of 2.4 $ \Omega $ is:

On execution of the program segment:

If all the poles of $ H(z) $ are outside the unit circle, then the system is said to be: