List of top Questions asked in CUET (PG)

A signal \(x(t)\) is given below : \[ x(t)=\left(\frac{3}{2}\right)\cos(190\times10^3\pi t)+5\cos(200\times10^3\pi t)+\left(\frac{1}{2}\right)\cos(210\times10^3\pi t) \] What is the power efficiency in the AM signal?

Which of the following statements are correct A. A negative feedback can increase linearity and reduce distortion. B. Positive feedback always improves stability of the amplifier. C. Series-shunt (voltage) negative feedback tends to reduce output impedance. D. Closed-loop bandwidth typically increases when negative feedback is applied. Choose the correct answer from the options given below :

In an op-amp which of the following parameters depend on frequency. A. Voltage gain B. Noise current C. CMRR D. Output voltage swing E. Gain bandwidth product Choose the correct answer from the options given below :

The sequence of physical events when forward bias is applied to PN junction: A. Barrier potential reduces B. Majority carriers injected across junction C. Recombination in neutral regions increases D. Diffusion current established across quasi-neutral regions E. Net forward current increases Choose the correct answer from the options given below :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The gate of a MOSFET is insulated from body of FET by deposition of a very thin fragile layer of \(SiO_2\) over the substrate. Reason (R): The device is therefore called an insulated gate field-effect transistor (IGFET). In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The body effect in MOSFET causes the threshold voltage \(V_{th}\) to increase as source-body voltage \(V_{SB}\) increases. Reason (R): Increasing \(V_{SB}\) resets the surface potential and therefore reduces the barrier for inversion. In the light of the above statements, choose the most appropriate answer from the options given below :

Sequence for standard n-well fabrication process is : A. Passivation B. n-well implant C. Metallization D. Source/drain diffusion Choose the correct answer from the options given below :

What is the typical efficiency of half-wave rectifier?

For the given emitter-bias network, determine the values of \(I_C\) and \(V_{CE}\). Assume \(\beta =100\).

For the series diode configuration of the given figure, determine \(V_D\) and \(I_D\).

For an op-amp having a slew rate of \(4 \text{ V}/\mu s\), what is the maximum closed-loop voltage gain that can be used when input signal varies by \(0.1V\) in \(10\mu s\)?

Calculate the output voltage of an op-amp for input voltages of \(V_{i1}=150\mu V\) and \(V_{i2}=140\mu V\). The amplifier has a differential gain of \(A_d=4000\) and the value of CMRR is \(100\):

Enzyme inhibition
• [A.] Irreversible inhibitor increase \(V_{\max}\)
• [B.] Inhibition can regulate metabolism
• [C.] Competitive inhibitors bind active site
• [D.] Non competitive inhibitors bind allosteric site Choose the correct answer from the options given below:

Process of DNA replication involves
• DNA polymerase synthesis
• Semi conservative
• In eukaryotes occur in cytoplasm
• Require RNA primer Choose the correct answer from the options given below:

Arrange common antigens as per their molecular weight A. Bovine gamma globulin (BGG) B. Ovalbumin (OVA) C. Bovine serum albumin (BSA) D. Sperm whale myoglobin (SWM) Choose the correct answer from the options given below:

Arrange mitosis in animal cell A. Metaphase B. Prophase C. Anaphase D. Telophase Choose the correct answer from the options given below:

Among these statement about the cell cycle
• [A.] G is growth phase
• [B.] DNA replication in S phase
• [C.] Mitosis included cytokinesis
• [D.] \(G_0\) is dividing phase Choose the correct answer from the options given below:

Bacterial cell division by binary phase A. Cell elongation B. Chromosome replication C. New cell wall deposition D. Two daughter cells result Choose the correct answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Multiple alleles can exist in populations Reason R : More than two alleles is possible in an individual In the light of the above statements, choose the correct answer from the options given below

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Calcium ions are essential for blood coagulation Reason R : Clotting factors required calcium ions for their activation In the light of the above statements, choose the correct answer from the options given below

Name the vitamin responsible for the disease Rickets.
• Vitamin A
• Vitamin B
• Vitamin D
• Vitamin C

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Prion disease considered to be infectious Reason R : The misfolded protein induce misfolding of normal proteins In the light of the above statements, choose the correct answer from the options given below

Sequence how enzyme converts substrate into products A. Substrate held in the active site by weak interaction B. The active site lower \(E_a\) and speed up the reaction C. Substrate enters into active site, enzyme changes shape D. Substrate are converted to products Choose the correct answer from the options given below: