List of practice Questions

Consider the diode circuit shown below. The diode, D, obeys the current-voltage characteristic \(I_D = I_s(\exp(V_D/nV_T) - 1)\). The circuit is biased so that voltage \(V>0\) and current \(I<0\). If you had to design this circuit to transfer maximum power from the current source (\(I_1\)) to a resistive load (not shown) at the output, what values for R1 and R2 would you choose? A. Small \(R_1\), B. Large \(R_1\), C. Small \(R_2\), D. Large \(R_2\). Choose the correct answer from the options given below:
If the number of zeros is less than the number of poles, i.e. \( Z<P \), then the value of the transfer function becomes zero for \( s \to \infty \). Hence, some zeros are located at infinity and the order of such zeros will be:
In the ISFET pH measurement system, the voltage circuit has ........ impedance and the current circuit has ......... impedance.
.......... type of electrochemical detection measures the electric current associated with the electron transfer involved in redox processes whereas ............ type of electrochemical detection measures conductance or capacitance changes associated with changes in the overall ionic medium between the two electrodes.
Which of the following statements is incorrect about Light-addressable potentiometric sensors (LAPS)?
A quadratic function of two variables is given as \( f(x_1, x_2) = x_1^2 + 2x_2^2 + 3x_1 + 3x_2 + 1 \). The magnitude of maximum rate of change of the function at the point (1,1) is
For a given vector \( W^T = [1, 2, 3] \), the vector is normal to the plane defined by \( W^T \cdot X = 1 \).
In the given figure, the vectors u and v are related as \( Au = v \) by a transformation matrix A. The correct choice of matrix A is % Vector details u = (4,3), v = (5,0)
Let the probability density function of a random variable x be given as \( f(x) = ae^{-2|x|} \). The value of 'a' is
Match List-I with List-II
Choose the correct answer from the options below:
The process of transferring growth species from a source or target and depositing them on a substrate to form a film is called:
In X-ray diffraction, a collimated beam of X-rays, with most appropriate wavelength ranging from .......... is incident on a specimen and is diffracted by the crystalline phases of the specimen:
........... are electromagnetic radiation with typical photon energies in the range of 100 eV to 100 keV:
Measurement of grain size by using X-ray diffraction line broadening can be done by:
Quantum well lasers were first fabricated using the ............ material systems.
The measurement of Nitric Oxide (NO) is quite difficult due to its ........ half-life and ........ reactivity with other biological components such as superoxide, oxygen, thiols.
Major problems with the large-scale utilization of carbon nanotubes
(A) synthesis in pure forms
(B) dispersion in solvents
(C) reducing their length
(D) tailoring into a desired orientation
Match List-I with List-II
In nanomaterials production, according to Aufbau principle the self-assembly of complicated structures takes place in a hierarchical fashion in the following sequence:
(A) the linear chains are bundled to form two-dimensional monolayers
(B) single molecules join up to form linear chains
(C) a finite number of independent molecules
(D) the two-dimensional monolayers are stacked to form the final three-dimensional crystal
Choose the correct answer from the options given below:
The number of cubes of each side 1 nm and the collective surface area that can be carved out from a cube with each side of 1 m are respectively:
The process of transferring a pattern into a reactive polymer film which will subsequently be used to replicate that pattern into an underlying thin film is called:
The process of synthesizing large polymer molecules is:
Which of the following statements about hydrogen peroxide is INCORRECT?
............ refers to the inability to faithfully repeat recorded data output when measuring a range of values and scanning from different directions.
........ is the vector address of the TRAP interrupt.