List of practice Questions

What is the word length of an 8-bit microprocessor?

To expand a 4-bit parallel adder to an 8-bit parallel adder, we can
(A) use two 4-bit adders and connect the sum output of one to the input bit of the other
(B) use four 4-bit adders with no interconnections
(C) use two 4-bit adders with the carry output of one connected to the carry input of the other
(D) use eight 4-bit adders with no interconnections

Which of the following statement(s) about Digital-to-Analog (DAC) converter is/are correct?
(A) DAC is said to be monotonic if its output decreases as the binary input is incremented from one value to the next.
(B) Ideally, the output of a DAC should be zero when the binary input is zero.
(C) The operating speed of a DAC is usually specified by giving its settling time.
(D) Resolution is the reciprocal of the number of discrete steps in the full-scale output of the DAC.

In the first window of optical fibre, light sources are generally:

Following statements are given in reference to 8085 Microprocessor:
(A) Its memory size is 64 KB
(B) It is a 40-pin IC
(C) Its clock frequency lies between 3 to 5 MHz
(D) It has 16 bit of each data and address lines.
Choose the correct answer from the options given below:

Fibre optic sensors may be classified into three categories. Choose the incorrect option.

Which of the following is the most appropriate transmission frequency in optical fibre?

Which part of optical fibre has a higher refractive index:

(A) MOV A, C is a one-byte instruction.
(B) OUT 03 H is a two-byte instruction.
(C) ANI 76 H is a three-byte instruction.
(D) STA 3000 H is a three-byte instruction.

If the diameter of the chiral carbon nanotubes increases, then

The Extreme Ultraviolet (EUV) lithography employs .......... wavelength.

Attenuation in optical fibre can be measured in:

........... nanoparticles are extraordinarily efficient for clinical diagnostic purposes as they give strong signatures in optical absorption, fluorescence spectroscopy, X-Ray diffraction, and electrical conductivity.

Bio-functionalization of magnetic nanoparticles has been extensively used for the development of biosensors such as:

A multiplexer (MUX)
(A) is a parallel to serial converter
(B) is also known as data distributor
(C) can be used as a logic function generator
(D) switch the data from several lines to one line

Choose the correct answer from the options given below:

A 32:1 Mux can be designed using:

Gauss's law in magnetostatics is expressed as,

If in a free space, the electric field is given as: \[ \vec{E} = 20 \cos(\omega t - 50x) \hat{y} \, \text{V/m} \] then, the expression of displacement current density \( J_d \) is:

If electric \( \vec{E}(r,t) \) and magnetic \( \vec{B}(r,t) \) fields are defined as \[ \vec{E}(r,t) = \vec{E}_0 e^{i(k \cdot r - \omega t)} \hat{n}, \quad \vec{B}(r,t) = \frac{1}{c} \hat{k} \times \vec{E}(r,t) \] where \( k \) is the propagation vector and \( \hat{n} \) is the polarization vector. E and B are transverse in nature, if they satisfy which of the following conditions?

The characteristic length scale of nanomaterials is:

Arrange the following fabrication steps of MOSFET from initials:
(A) Metallization
(B) Oxidation
(C) Etching
(D) Diffusion/Ion implantation

Choose the wrong option from the following for the given statement. Statement: Electric field is conservative.