List of top Instrumentation Engineering Questions asked in AP PGECET

If DTFT of $x_1(n)$ is $X_1(\omega)$, then the DTFT of the signal $x_2(n) = nx_1(n)$ is

X and Y plates of a CRO are connected to unequal voltages of equal frequency with phase of $90^\circ$. The Lissajous figure on the screen will be

The root mean squared value of $x(t) = 3 + 2\sin(t)\cos(2t)$ is

Which of the following pulse modulation is analog?

The output of two digital filters can be added or the same effect can be achieved by

A PLL can be used to modulate

Low resistance is measured by

The full scale deflection current of an ammeter is 1mA and its internal resistance is $100\Omega$. If this meter is to have full deflection of 5A, what is the value of the shunt resistance to be used?

The period of signal $x(t) = 10\sin 5t - 4\cos 9t$ is

The Fourier transform of signal $\delta(t+1) + \delta(t-1)$ is

The logic circuit shown in the figure is

How many special function registers are there in 8051 microcontroller?

The number of comparators required in an 8-bit flash-type A/D converter is

A digital voltmeter uses a 10MHz clock and has a voltage controlled generator which provides a width of $10\mu\text{s}$ per volt of unit signal. 10V of input signal would corresponds to a pulse count of}

Identify the logic gate family, which is slowest among the given logic?

Which has the highest fan-out?

The minimum number of NOR gates required to implement A(A+B)(A+B+C) is equal to

The advantage of using dual slope ADC in a digital voltmeter is that

What is size of bit addressable memory in 8051 microcontroller?

A 10-bit A/D converter is used to digitize an analog voltage signal in $0 - 5\text{V}$ range. The maximum peak to peak ripple voltage that can be allowed in DC voltage is}

A Bode plot of a transfer function G(s) is shown in the figure. The gain 'A' in dB at frequency f = 100Hz is:

For critically damped system, the value of the damping ratio $\zeta$ is:

A unit step input is applied to the negative feedback system whose closed loop transfer function is $\frac{63}{S^2 + 4.8S + 9}$, then the steady state value of the output is}

If the phase margin of a system is zero degrees, then the system is

Which one of the following statements is True?