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Type:ALLMCQNATMSQ

General Aptitude(10)Engineering Mathematics(9)Electricity and Magnetism(2)Electrical Circuits and Machines(5)Signals and Systems(5)Control Systems(6)Analog Electronics(9)Digital Electronics(5)Measurements(6)Sensors and Industrial Instrumentation(4)Communication and Optical Instrumentation(4)

General Aptitude

10 Questions

GATE→2022→General Aptitude→Verbal Ability

Q1

MCQ[1 Mark]

Inhaling the smoke from a burning _____ could _____ you quickly.

(A)

tire/tier

(B)

tire/tyre

(C)

tyre/tire

(D)

tyre/tier

Explanation

GATE→2022→General Aptitude→Quantitative Aptitude

Q2

MCQ[1 Mark]

A sphere of radius r cm is packed in a box of cubical shape. What should be the minimum volume (in $\text{cm}^{3}$) of the box that can enclose the sphere?

(A)

\frac{r^{3}}{8}

(B)

r^{3}

(C)

2r^{3}

(D)

8r^{3}

Explanation

GATE→2022→General Aptitude→Quantitative Aptitude

Q3

MCQ[1 Mark]

Pipes P and Q can fill a storage tank in full with water in 10 and 6 minutes, respectively. Pipe R draws the water out from the storage tank at a rate of 34 litres per minute... what is the capacity of the storage tank (in litres)?

(A)

26.8

(B)

60.0

(C)

120.0

(D)

127.5

Explanation

GATE→2022→General Aptitude→Quantitative Aptitude

Q4

MCQ[1 Mark]

Six persons P, Q, R, S, T and U are sitting around a circular table facing the center... Based on the above statements, Q is a neighbor of

(A)

U and S

(B)

R and T

(C)

R and U

(D)

P and S

Explanation

GATE→2022→General Aptitude→Quantitative Aptitude

Q5

MCQ[1 Mark]

A building has several rooms and doors as shown in the top view of the building given below... What is the minimum number of doors that need to be opened in order to go from the point P to the point Q?

(A)

4

(B)

3

(C)

2

(D)

1

Explanation

GATE→2022→General Aptitude→Verbal Ability

Q6

MCQ[2 Marks]

Rice, a versatile and inexpensive source of carbohydrate... Which one of the following is the CORRECT logical inference based on the information given in the above passage?

(A)

GSR is an alternative to regular rice, but it grows only in an extreme weather

(B)

GSR may be used in future in response to adverse effects of climate change

(C)

GSR grows in an extreme weather, but the quantity of produce is lesser than regular rice

(D)

Regular rice will continue to provide good yields even in extreme weather

Explanation

GATE→2022→General Aptitude→Quantitative Aptitude

Q7

MCQ[2 Marks]

A game consists of spinning an arrow around a stationary disk... What is the probability that the sum of the numbers on the resulting sectors upon spinning the two disks is equal to 8 after the arrows come to rest?

(A)

\frac{1}{16}

(B)

\frac{5}{64}

(C)

\frac{3}{32}

(D)

\frac{7}{64}

Explanation

GATE→2022→General Aptitude→Quantitative Aptitude

Q8

MCQ[2 Marks]

Consider the following inequalities. $3p - q < 4$, $3q - p < 12$. Which one of the following expressions below satisfies the above two inequalities?

(A)

p + q < 8

(B)

p + q = 8

(C)

8 \le p + q < 16

(D)

p + q \ge 16

Explanation

GATE→2022→General Aptitude→Verbal Ability

Q9

MCQ[2 Marks]

Given below are three statements and four conclusions drawn based on the statements... Which one of the following options can be logically inferred?

(A)

Only conclusion I is correct

(B)

Only conclusion II and conclusion III are correct

(C)

Only conclusion I and conclusion III are correct

(D)

Either conclusion III or conclusion IV is correct

Explanation

GATE→2022→General Aptitude→Quantitative Aptitude

Q10

MCQ[2 Marks]

Which one of the following sets of pieces can be assembled to form a square with a single round hole near the center? Pieces cannot overlap.

(A)

Option A

(B)

Option B

(C)

Option C

(D)

Option D

Explanation

Engineering Mathematics

9 Questions

GATE→2022→Engineering Mathematics→Calculus

Q11

MCQ[1 Mark]

A periodic function $f(x)$, with period 2, is defined as... The Fourier series of this function contains

(A)

Both \cos (n\pi x) and \sin (n\pi x) where n=1,2,3,...

(B)

Only \sin (n\pi x) where n=1,2,3,...

(C)

Only \cos (n\pi x) where n=1,2,3,...

(D)

Only \cos (2n\pi x) where n=1,2,3,...

Explanation

GATE→2022→Engineering Mathematics→Linear Algebra

Q12

MSQ[1 Mark]

Given $M = \begin{bmatrix} 2 & 3 & 7 \\ 6 & 4 & 7 \\ 4 & 6 & 14 \end{bmatrix}$, which of the following statement(s) is/are correct?

(A)

The rank of M is 2

(B)

The rank of M is 3

(C)

The rows of M are linearly independent

(D)

The determinant of M is 0

Explanation

GATE→2022→Engineering Mathematics→Calculus

Q13

NAT[1 Mark]

The global minimum of $x^{3}e^{-|x|}$ for $x \in (-\infty, \infty)$ occurs at $x =$ (round off to one decimal place).

Explanation

GATE→2022→Engineering Mathematics→Probability and Statistics

Q14

NAT[1 Mark]

A bag contains six red balls and four blue balls. If three balls are drawn in succession without replacement, the probability that the second and third balls drawn are red is (round off to two decimal places).

Explanation

GATE→2022→Engineering Mathematics→Numerical Methods

Q15

NAT[1 Mark]

The Newton-Raphson method is applied to determine the solution of $f(x) = 0$ where $f(x) = x - \cos(x)$. If the initial guess of the solution is $x_{0} = 0$, the value of the next approximation $x_{1}$ is (round off to two decimal places).

Explanation

GATE→2022→Engineering Mathematics→Differential Equations

Q16

MCQ[2 Marks]

Consider the differential equation $\frac{dy}{dx} + y \ln(y) = 0$. If $y(0) = e$ then $y(1)$ is

(A)

e^{e}

(B)

e^{-e}

(C)

e^{(1/e)}

(D)

e^{(-1/e)}

Explanation

GATE→2022→Engineering Mathematics→Linear Algebra

Q17

MSQ[2 Marks]

The matrix $A = \begin{bmatrix} 4 & 3 \\ 9 & -2 \end{bmatrix}$ has eigenvalues -5 and 7. The eigenvector(s) is/are

(A)

\begin{bmatrix} 1 \\ 1 \end{bmatrix}

(B)

\begin{bmatrix} 3 \\ 4 \end{bmatrix}

(C)

\begin{bmatrix} 2 \\ -6 \end{bmatrix}

(D)

\begin{bmatrix} 2 \\ 8 \end{bmatrix}

Explanation

GATE→2022→Engineering Mathematics→Analysis of Complex Variables

Q18

MSQ[2 Marks]

For the complex number $z = \frac{a+jb}{a-jb}$, where $a > 0$ and $b > 0$. Which of the following statement(s) is/are true?

(A)

The phase is 2 \tan^{-1}\frac{b}{a}

(B)

The phase is \tan^{-1}\frac{2b}{a}

(C)

The magnitude is 1

(D)

\sqrt{\frac{a^{2}+b^{2}}{a^{2}-b^{2}}}$

Explanation

GATE→2022→Engineering Mathematics→Analysis of Complex Variables

Q19

NAT[2 Marks]

Consider the function $f(z) = \frac{1}{(z+1)(z+2)(z+3)}$. The residue of $f(z)$ at $z = -1$, is

Explanation

Electricity and Magnetism

2 Questions

GATE→2022→Electricity and Magnetism→Electric and Magnetic Fields & Laws

Q20

NAT[2 Marks]

A conducting semi-circular loop of radius $R = 0.1$ m... the peak-to-peak current (in milliamperes) in the loop is (round off to one decimal place).

Explanation

GATE→2022→Electricity and Magnetism→Electric and Magnetic Fields & Laws

Q21

NAT[2 Marks]

A capacitor is constructed using two concentric spheres and air as the dielectric medium... The capacitance (in picofarads) is (round off to 2 decimal places).

Explanation

Electrical Circuits and Machines

5 Questions

GATE→2022→Electrical Circuits and Machines→Electrical Machines

Q22

NAT[1 Mark]

A 440 V, 8 kW, 4-pole, 50 Hz, star-connected induction motor has a full load slip of 0.04. The rotor speed (in rpm) at full load is (round off to one decimal place).

Explanation

GATE→2022→Electrical Circuits and Machines→Electrical Circuits

Q23

NAT[1 Mark]

In the bandpass filter circuit shown, $R_{0} = 50$ \Omega, $L_{0} = 1$ mH, $C_{0} = 10$ nF. The Q factor of the filter is (round off to two decimal places).

Explanation

GATE→2022→Electrical Circuits and Machines→Electrical Circuits

Q24

NAT[2 Marks]

In the circuit shown, the load is driven by a sinusoidal ac voltage source... the power factor is (round off to one decimal place).

Explanation

GATE→2022→Electrical Circuits and Machines→Electrical Circuits

Q25

NAT[2 Marks]

Given Circuit A with currents $I_{1}$ and $I_{2}$ as shown, the current $I_{3}$ in Circuit B (in amperes), is (round off to one decimal place).

Explanation

GATE→2022→Electrical Circuits and Machines→Electrical Circuits

Q26

NAT[2 Marks]

In the circuit shown, the capacitance $C_{0} = 10$ \mu\text{F} and inductance $L_{0} = 1$ mH and the diode is ideal... the voltage $V_{c}(t)$ (in volts) across the capacitor at $t = 0.5$ s is (round off to one decimal place).

Explanation

Signals and Systems

5 Questions

GATE→2022→Signals and Systems→Signals and Systems

Q27

MCQ[1 Mark]

The input $x(t)$ to a system is related to its output $y(t)$ as $\frac{dy(t)}{dt} + y(t) = 3x(t-3)u(t-3)$... The transfer function of this system is

(A)

\frac{e^{-3s}}{s+3}

(B)

\frac{3e^{-3s}}{s+1}

(C)

\frac{3e^{-(s/3)}}{s+1}

(D)

\frac{e^{-(s/3)}}{s+3}

Explanation

GATE→2022→Signals and Systems→Signals and Systems

Q28

MCQ[1 Mark]

The output of a system $y(t)$ is related to its input $x(t)$ according to the relation $y(t) = x(t)\sin(2\pi t)$. This system is

(A)

Linear and time-variant

(B)

Non-linear and time-invariant

(C)

Linear and time-invariant

(D)

Non-linear and time-variant

Explanation

GATE→2022→Signals and Systems→Signals and Systems

Q29

MCQ[1 Mark]

A signal $x(t)$ is band-limited between 100 Hz and 200 Hz. A signal $y(t)$ is related to $x(t)$ as follows: $y(t) = x(2t-5)$. The statement that is always true is

(A)

y(t) is band-limited between 50 Hz and 100 Hz

(B)

y(t) is band-limited between 100 Hz and 200 Hz

(C)

y(t) is band-limited between 200 Hz and 400 Hz

(D)

y(t) is not band-limited

Explanation

GATE→2022→Signals and Systems→Signals and Systems

Q30

MCQ[2 Marks]

Consider the transfer function $H_{c}(s) = \frac{1}{(s+1)(s+3)}$. Bilinear transformation with a sampling period of 0.1 s is employed to obtain the discrete-time transfer function $H_{d}(z)$. Then $H_{d}(z)$ is

(A)

\frac{(1+z^{-1})^{2}}{(19-21z^{-1})(23-17z^{-1})}

(B)

\frac{(1-z^{-1})^{2}}{(21-19z^{-1})(17-23z^{-1})}

(C)

\frac{(1+z^{-1})^{2}}{(21-19z^{-1})(23-17z^{-1})}

(D)

\frac{(1-z^{-1})^{2}}{(19-21z^{-1})(17-23z^{-1})

Explanation

GATE→2022→Signals and Systems→Signals and Systems

Q31

MCQ[2 Marks]

The signal $x(t) = (t-1)^{2}u(t-1)$, where $u(t)$ is the unit-step function, has the Laplace transform $X(s)$. The value of $X(1)$ is

(A)

\frac{1}{e}

(B)

\frac{2}{e}

(C)

2e

(D)

e^{2}

Explanation

Control Systems

6 Questions

GATE→2022→Control Systems→Control Systems and Actuators

Q32

MCQ[1 Mark]

A unity-gain negative-feedback control system has a loop-gain $L(s)$ given by $L(s) = \frac{6}{s(s-5)}$. The closed-loop system is

(A)

Causal and stable

(B)

Causal and unstable

(C)

Non-causal and stable

(D)

Non-causal and unstable

Explanation

GATE→2022→Control Systems→Control Systems and Actuators

Q33

NAT[1 Mark]

The transfer function of a system is... In the state-space representation of the system, the minimum number of state variables (in integer) necessary is

Explanation

GATE→2022→Control Systems→Control Systems and Actuators

Q34

MCQ[2 Marks]

The signal flow graph of a system is shown. The expression for $Y(s)/X(s)$ is

(A)

\frac{2G_{1}(s)G_{2}(s) + 2G_{1}(s)G_{3}(s)}{1 + G_{2}(s) + G_{3}(s)}

(B)

2 + G_{1}(s) + G_{3}(s) + \frac{G_{2}(s)}{1 + G_{2}(s)}

(C)

G_{1}(s) + G_{3}(s) - \frac{G_{2}(s)}{2 + G_{2}(s)}

(D)

\frac{2G_{1}(s)G_{2}(s) + 2G_{1}(s)G_{3}(s) - G_{1}(s)}{1 + G_{2}(s) + G_{3}(s)}

Explanation

GATE→2022→Control Systems→Control Systems and Actuators

Q35

MCQ[2 Marks]

A proportional-integral-derivative (PID) controller is employed to stably control a plant... the steady-state error in tracking a ramp reference signal

(A)

Remains unchanged

(B)

Decreases by a factor of 2

(C)

Decreases by a factor of 3

(D)

Decreases by a factor of 5

Explanation

GATE→2022→Control Systems→Control Systems and Actuators

Q36

MCQ[2 Marks]

The Nyquist plot of a stable open-loop system $G(j\omega)$ is plotted... The phase margin (PM) and the gain margin (GM) of the system are

(A)

\text{PM} = 39.7^{\circ} \text{ and } \text{GM} = 4.76

(B)

\text{PM} = 39.7^{\circ} \text{ and } \text{GM} = 0.07

(C)

\text{PM} = -39.7^{\circ} \text{ and } \text{GM} = 4.76

(D)

\text{PM} = -39.7^{\circ} \text{ and } \text{GM} = 0.07

Explanation

GATE→2022→Control Systems→Control Systems and Actuators

Q37

NAT[2 Marks]

In a unity-gain feedback control system, the plant... The slope (in dB/decade) of the asymptotic Bode magnitude plot of the loop gain at $\omega = 3$ rad/s is (in integer).

Explanation

Analog Electronics

9 Questions

GATE→2022→Analog Electronics→Analog Electronics

Q38

NAT[1 Mark]

A Zener diode is used as a 4 V voltage regulator in the circuit shown... the maximum current (in milliamperes) permitted to flow through the load $R_{L}$ is (round off to one decimal place).

Explanation

GATE→2022→Analog Electronics→Analog Electronics

Q39

NAT[1 Mark]

An OPAMP has a gain of $10^{4}$, an input impedance of 10 M\Omega and an output impedance of 100 \Omega... The closed-loop output impedance of the OPAMP (in milliohms) in the circuit is (round off to one decimal place).

Explanation

GATE→2022→Analog Electronics→Analog Electronics

Q40

MCQ[2 Marks]

A signal $V_{in}(t)$ shown is applied from $t=0$ ms to $t=6$ ms to the circuit shown... the open circuit voltage $V_{out}(t)$ at $t=5$ ms is

(A)

0.3 V

(B)

0.6 V

(C)

0.7 V

(D)

1.0 V

Explanation

GATE→2022→Analog Electronics→Analog Electronics

Q41

MCQ[2 Marks]

A resistor ladder digital-to-analog converter (DAC) receives a digital input... the Thevenin voltage, $V_{th}$, and Thevenin resistance, $R_{th}$ as seen at the output node are

(A)

V_{th} = 0.5 V, R_{th} = 1 k\Omega

(B)

V_{th} = 0.5 V, R_{th} = 2 k\Omega

(C)

V_{th} = 1 V, R_{th} = 1 k\Omega

(D)

V_{th} = 1 V, R_{th} = 2 k\Omega

Explanation

GATE→2022→Analog Electronics→Analog Electronics

Q42

MCQ[2 Marks]

In the small signal circuit shown, the enhancement mode n-channel MOSFET is biased in saturation... the small signal impedance looking into the node P is given by

(A)

R_{S} \parallel R_{L} \parallel g_{m}^{-1}

(B)

R_{S} \parallel g_{m}^{-1}

(C)

(R_{S} + R_{L}) \parallel g_{m}^{-1}

(D)

\frac{R_{L} g_{m}}{1 + R_{S} g_{m}} (R_{L} \parallel g_{m}^{-1})

Explanation

GATE→2022→Analog Electronics→Analog Electronics

Q43

MCQ[2 Marks]

In the small signal circuit shown, the enhancement mode n-channel MOSFET... the small signal gain $v_{o}/v_{d}$ is given by

(A)

\frac{-g_{m}R_{0}}{1 + g_{m}R_{0}}

(B)

(g_{m}R_{0} + 1)^{-1}

(C)

\frac{-g_{m}R_{0}}{1 + 2g_{m}R_{0}}

(D)

(\frac{g_{m}R_{0}}{2} + \frac{3}{2})^{-1}

Explanation

GATE→2022→Analog Electronics→Analog Electronics

Q44

NAT[2 Marks]

The circuit shown is driven by a sinusoidal input voltage... The frequency (in kilohertz) at which the voltage gain is 0 dB is (round off to two decimal places).

Explanation

GATE→2022→Analog Electronics→Analog Electronics

Q45

NAT[2 Marks]

In the circuit shown, $R_{1} = 100$ \Omega and $R_{2} = 1$ \Omega... the $\beta$ (current gain) of the BJT is (round off to two decimal places).

Explanation

GATE→2022→Analog Electronics→Analog Electronics

Q46

NAT[2 Marks]

In the circuit shown, the switch is initially closed. It is opened at $t = 0$ s... The time (in milliseconds) at which the output voltage $V_{out}$ becomes LOW is (round off to three decimal places).

Explanation

Digital Electronics

5 Questions

GATE→2022→Digital Electronics→Digital Electronics and Embedded Systems

Q47

MCQ[1 Mark]

The logic block shown has an output F given by

(A)

\overline{B}

(B)

\overline{B}

(C)

A + B

(D)

\overline{B}

Explanation

GATE→2022→Digital Electronics→Digital Electronics and Embedded Systems

Q48

MSQ[1 Mark]

The output F of the digital circuit shown can be written in the form(s)

(A)

\overline{A.B}

(B)

\overline{A} + \overline{B}

(C)

A + B

(D)

\bar{A}.\bar{B}

Explanation

GATE→2022→Digital Electronics→Digital Electronics and Embedded Systems

Q49

NAT[1 Mark]

An analog-to-digital converter with resolution 0.01 V converts analog signals between 0 V to +10 V to an unsigned binary output. The minimum number of bits (in integer) in the output is

Explanation

GATE→2022→Digital Electronics→Digital Electronics and Embedded Systems

Q50

MCQ[2 Marks]

The digital circuit shown

(A)

is a divide-by-5 counter

(B)

is a divide-by-7 counter

(C)

is a divide-by-8 counter

(D)

does not function as a counter due to disjoint cycles of states

Explanation

GATE→2022→Digital Electronics→Digital Electronics and Embedded Systems

Q51

MCQ[2 Marks]

$A = a_{1}a_{0}$ and $B = b_{1}b_{0}$ are two 2-bit unsigned binary numbers... then F can be minimized to the form

(A)

a_{1}\bar{b}_{1} + a_{1}a_{0}\bar{b}_{0}

(B)

a_{1}\bar{b}_{1} + a_{1}a_{0}\bar{b}_{0} + a_{0}\bar{b}_{0}\bar{b}_{1}

(C)

a_{1}a_{0}\bar{b}_{0} + a_{0}\bar{b}_{0}\bar{b}_{1}

(D)

a_{1}\bar{b}_{1} + a_{1}a_{0}\bar{b}_{0} + a_{0}\bar{b}_{0}b_{1}

Explanation

Measurements

6 Questions

GATE→2022→Measurements→Measurements and Instruments

Q52

MCQ[1 Mark]

The resistance of a pure copper wire of length 10 cm and diameter 1 mm is to be measured. The most suitable method from amongst the choices given below is

(A)

Two wire method

(B)

Three wire method

(C)

Four wire method

(D)

Ellipsometry

Explanation

GATE→2022→Measurements→Measurements and Instruments

Q53

MSQ[1 Mark]

In which of the following bridge(s) is the balancing condition frequency-independent?

(A)

Maxwell bridge

(B)

Wien bridge

(C)

Schering bridge

(D)

Wheatstone bridge

Explanation

GATE→2022→Measurements→Measurements and Instruments

Q54

NAT[2 Marks]

In the balanced three-phase circuit shown, $C_{0} = 8.2$ \mu\text{F}... The reading on the wattmeter (in watts) is (round off to two decimal places).

Explanation

GATE→2022→Measurements→Measurements and Instruments

Q55

NAT[2 Marks]

A 1 kHz sine-wave generator having an internal resistance of 50 \Omega generates an open-circuit voltage of 10 $V_{p-p}$... The capacitance of the capacitor (in microfarads) is (round off to two decimal places).

Explanation

GATE→2022→Measurements→Measurements and Instruments

Q56

NAT[2 Marks]

The bridge shown is balanced when $R_{1} = 100$ \Omega, $R_{2} = 210$ \Omega, $C_{2} = 2.9$ \mu\text{F}, and $R_{4} = 50$ \Omega... The value of $L_{3}$ (in millihenry) is (round off to two decimal places).

Explanation

GATE→2022→Measurements→Measurements and Instruments

Q57

NAT[2 Marks]

In the Wheatstone bridge circuit shown... The sensitivity of the bridge (in volt/kiloohm), defined as $|\frac{\delta V_{CD}}{\delta R_{1}}|$, is (round off to two decimal places).

Explanation

Sensors and Industrial Instrumentation

4 Questions

GATE→2022→Sensors and Industrial Instrumentation→Sensors and Industrial Instrumentation

Q58

MCQ[1 Mark]

A pneumatic nozzle-flapper system is conventionally used to convert

(A)

Small changes in flapper's velocity to large changes in output temperature

(B)

Small changes in flapper's displacement to large changes in output temperature

(C)

Small changes in flapper's velocity to large changes in output pressure

(D)

Small changes in flapper's displacement to large changes in output pressure

Explanation

GATE→2022→Sensors and Industrial Instrumentation→Sensors and Industrial Instrumentation

Q59

MCQ[1 Mark]

A Hall sensor is based on the principle of

(A)

Photoelectric effect

(B)

Seebeck effect

(C)

Piezoelectric effect

(D)

Lorentz force

Explanation

GATE→2022→Sensors and Industrial Instrumentation→Sensors and Industrial Instrumentation

Q60

MCQ[1 Mark]

The figure shows a Chromel-Alumel thermocouple... When C1 and C2 are held at temperature $T_{C}$, the voltmeter reads a thermal emf $E_{2}$. Then,

(A)

E_{1} < E_{2}

(B)

E_{1} > E_{2}

(C)

E_{1} = 2E_{2}

(D)

E_{1} = E_{2}

Explanation

GATE→2022→Sensors and Industrial Instrumentation→Sensors and Industrial Instrumentation

Q61

NAT[2 Marks]

Monochromatic light of wavelength 532 nm... The absorption coefficient (in $\text{cm}^{-1}$) of the material is (round off to two decimal places).

Explanation

Communication and Optical Instrumentation

4 Questions

GATE→2022→Communication and Optical Instrumentation→Communication and Optical Instrumentation

Q62

MCQ[1 Mark]

A sinusoidal carrier wave with amplitude $A_{c}$ and frequency $f_{c}$ is amplitude modulated... The message signal that can be retrieved completely using envelope detection is

(A)

m(t) = 0.5 \cos(2\pi f_{m}t)

(B)

m(t) = 1.5 \sin(2\pi f_{m}t)

(C)

m(t) = 2 \sin(4\pi f_{m}t)

(D)

m(t) = 2 \cos(4\pi f_{m}t)

Explanation

GATE→2022→Communication and Optical Instrumentation→Communication and Optical Instrumentation

Q63

NAT[1 Mark]

Consider 24 voice signals being transmitted without latency using time-division multiplexing... the bit-duration (in microseconds) is (round off to two decimal places).

Explanation

GATE→2022→Communication and Optical Instrumentation→Communication and Optical Instrumentation

Q64

NAT[1 Mark]

A photodiode is made of a semiconductor with a bandgap of 1.42 eV... the cut-off wavelength (in nanometers) of the photodiode is (round off to one decimal place).

Explanation

GATE→2022→Communication and Optical Instrumentation→Communication and Optical Instrumentation

Q65

MCQ[2 Marks]

A car is moving collinearly with a laser beam emitted by a transceiver... the average speed of the car in this interval is

(A)

54 kmph, moving towards the transceiver

(B)

108 kmph, moving towards the transceiver

(C)

54 kmph, moving away from the transceiver

(D)

108 kmph, moving away from the transceiver

Explanation