List of top Instrumentation Engineering Questions

A transfer function has two zeros at infinity. Then the relation between the numerator degree (N) and the denominator degree (M) of the transfer function is:

An ammeter with input resistance of 50 $\Omega$ gives full scale deflection for 50 $\mu$A current.
The input resistance of a 0–1 mA ammeter obtained by connecting a shunt across the 0–50 $\mu$A meter will be:

The transfer function of the system is the Laplace transform of its

Wien bridge is best suited for the measurement of

The instrument that does not have any restoring torque is

Find the inverse Fourier transform of \( F(f) = \frac{3\pi f}{1 + j\pi f} \)

A signal \( x(t) = 5 \cos(150\pi t - 60^\circ) \) is sampled at 200 Hz. The fundamental period of the sampled sequence \( x(n) \) is:

A bandlimited signal with highest frequency content of 1000 Hz is undergoing uniform sampling. The minimum sampling frequency required to recover the original signal is:

A phase locked loop can be employed for demodulation of

In an FM Broadcast, the maximum frequency deviation allowed is 75 kHz and the maximum modulation frequency is 15 kHz. The bandwidth is closest to

Match the modulation (List-1) with the type of demodulator (List-2):

The type of A/D converter normally used in a 3 ½ digit multimeter is

Which of the following sequence \( f(n) \) has z-transform \( X(z) = e^{1/z} \)?

If a real function \( f(t) \) has a Fourier Transform \( F(\omega) \), then the Fourier transform of \( f(t) - f(-t) \) is:

A computer has a memory space of \( 2^{16} \) and word length of 24 bits. Each memory chip has 10 address lines and 8 data lines. Number of chips required is:

The Boolean expression \( \overline{A + B + \overline{C}} \) is equal to:

An ideal op-amp has the characteristic of an ideal:

For the active filter shown, the DC gain and the 3 dB cutoff frequency are nearly: \[ C_1 = 1.0\ \text{nF},\ R_1 = 15.9\ \text{k}\Omega,\ R_2 = 159\ \text{k}\Omega \]

The output voltage \(V_o\) of the circuit is:

In the circuit shown, the ideality factor \( \eta \) of the diode is unity and the voltage drop across it is 0.7 V. The dynamic resistance of the diode at room temperature is approximately:

A forward-biased silicon diode has a voltage drop of 0.64 V at negligible current. When the current is 1 A and it dissipates 1 W, the ON resistance of the diode is:

A shaft encoder attached to a DC motor has a sensitivity of 500 pulses per revolution. A frequency meter connected to the encoder output indicates 5500 Hz. The speed of the motor in rpm is:

The total inductance of two inductances \(L_1\) and \(L_2\) with series opposing connection and mutual inductance \(M\) is:

Force on a current-carrying conductor placed in a magnetic field is given by: