List of top Nanoelectronics Questions asked in CUET (PG)

Considering the op-amp to be ideal, the \(v_{\text{out}}\) is expressed as:

Express \(v_{\text{out}}\) in terms of \(v_{\text{in}}\) for the given circuit, assuming the op-amp is ideal.

Arrange the following devices in increasing order of their input resistances:
(A) MOSFET
(B) BJT
(C) JFET
(D) PN junction diode

(A) Tunnel diode is a heavily doped pn junction diode that exhibits negative differential resistance.
(B) Stability factor (S) is the maximum for a voltage divider bias circuit.
(C) The operational amplifier works as a comparator circuit in open loop configuration.
(D) Biasing is done to set the quiescent point of the transistor in the middle of the DC load line.
Choose the correct statements from the options given below:

The consequences of Early effect on BJT are:
(A) Effective base width reduces.
(B) Emitter injection efficiency and base transport factor increase.
(C) $\alpha$ and $\beta$ decrease.
(D) Emitter injection efficiency and base transport factor decrease.
Choose the correct answer:

In GaAsP, if $E_g = 1.9 \, \text{eV}$, the emission wavelength is:

Consider the following statements:
(A) Built-in potential across a diode reduces with increase in temperature.
(B) Electron concentration of n-type semiconductor equals intrinsic concentration at Curie temperature.
(C) Drain current of MOSFET is a positive temperature coefficient (PTC).
(D) Collector current of BJT has a PTC.
Choose the correct statements:

The transmission efficiency of an ordinary AM signal with a modulation percentage of 80% is:

In amplitude modulation:
(A) The envelope detector operates properly, only if $(1/f_c) \leq RC \leq (1/f_m)$
(B) Vestigial sideband modulation is used in television broadcasting.
(C) Selective fading produces more distortion in SSB-SC systems than in DSB-SC.
(D) Efficiency of a suppressed carrier system is 100%, whereas in AM the maximum efficiency is only 33.3%.
Choose the correct answer from the options given below:

The output frequency for an 8-bit Johnson counter is ......... if the applied input frequency is 256 GHz.

The number of flip-flops required to implement a MOD-31 counter are:

Characteristic equation (\( Q_{next} \)) is provided for the different flip-flops:
(A) \( Q_{next} = S Q + R Q' \)
(B) \( Q_{next} = S Q' + R Q \)
(C) \( Q_{next} = T Q' + T' Q \)
Choose the correct answer from the options given below:

The product of maxterms for the given boolean function is: \[ Y = ab + a'c \] Choose the correct answer from the options given below:

Determine the Y11 and Y12 parameters for the circuit given below:

The voltage across the inductor for \( t > 0 \) in the given circuit is:

Choose the correct statement from the options below:

In a circuit, the maximum power will be transferred only if the load resistance is equal to ...........

Evaluate the mesh current \( i_1 \) in the given circuit:

Determine the node voltages \( v_1 \) and \( v_2 \) for the given circuit: