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DATE:-October 4, 2026
2.
What is the nature of Fourier representation of a discrete & aperiodic signal?
3.
For telegraphy the most commonly used modulation system is
4.
The initial response when tne output is not equal to input is called
5.
The resistivity of a pure silicon is about……………
6.
Manipulate the following equation to solve for x: a = √bx2
7.
A modem is classified as low speed if data rate handled is
8.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
9.
The Fourier series of an odd periodic function contains
10.
Themost commonlyused semiconductoris………..
11.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
12.
A good control system has all the following features except
13.
Grand Central Terminal, Park Avenue, New York is the world’s
14.
In a semiconductor,current conduction is due to ……..
15.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
16.
A woofer should be fed from the input through a
17.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
18.
Which type of system response to its input represents the zero value of its initial condition?
19.
An n-type semiconductor is………
20.
The frequency range of 300 kHz to 3000 kHz is known as
21.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
22.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
24.
A semiconductor has………… temperature coefficient of resistance.
25.
The colour of an object is decided by
26.
Garampani sanctuary is located at
27.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
28.
When a pure semiconductor is heated,its resistance …………..
29.
An automatic toaster is a ______ loop control system.
30.
For open control system which of the following statements is incorrect ?
31.
Which of the following statements is not necessarily correct for open control system ?
32.
All causal systems must have the component of
33.
A pentavalent impurity has……….Valence electrons
34.
Complex numbers are used in AC circuit analysis primarily to represent:
35.
Double integration of a unit step function would lead to
36.
Addition of trivalent impurity to a semiconductor creates many……..
37.
To eliminate ghosts in the picture
38.
Name the person who was also known as Deshbandhu.
39.
Convert an angle of 75 degrees into radians:
40.
The resistivity of pure germanium under standard conditionsis about……….
41.
Which of the following personalities gave ‘The Laws of Heredity’?
43.
Manipulate the following equation to solve for x:
44.
Reactance bipolar transistor
45.
The sine function is defined as ratio of side lengths,
46.
A semiconductor has generally……………… valence electrons.
47.
Duality Theorem / Property of Fourier Transform states that _________
48.
A closed loop system is distinguished from open loop system by which of the following ?
49.
Has tendency to oscillate.
50.
Which of the following is an open loop control system ?
51.
If the cosine of angle θ is equal to 0.5, and the length of the opposite side is 20 meters, calculate the length of the hypotenuse.
52.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
53.
Damped sinusoids are _____
54.
For attenuation of high frequencies we should use
55.
A trivalent impurity has…..valence electrons
56.
Factor the following polynomial expression: x2 −x−12
57.
.... is a closed loop system.
58.
Any externally introduced signal affecting the controlled output is called a
59.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
60.
By which of the following the control action is determined when a man walks along a path ?
61.
A system which is linear is said to obey the rules of
62.
A control system working under unknown random actions is called
63.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
64.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
65.
Which of the following is an indirect way of generating FM?
67.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
68.
A signal g(t) = A then g(t) is a
69.
A system is said to be dened as non causal, when
70.
Addition of pentavalent impurity to a semiconductor creates many……..
71.
The signal dened by the equations f(t) = 0 for t < 0, f(t) = E for 0 ? t ? a and f(t) = 0 for t > a is
72.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
73.
Commercial Frequency deviation of FM is
74.
Which of the following statements is correct?
75.
VSB modulation is preferred in TV because
76.
Which of the following national parks is not listed in a UNESCO World Heritage site?
77.
Positive logic in a logic circuit is one in which
78.
Which of the following ratios is equivalent to the ratio 25:300 ?
79.
A hole in a semiconductor is defined as…………….
80.
A control system in which the control action is somehow dependent on the output is known as
81.
Under which conditions does an initially relaxed system become unstable ?
82.
Which crop is sown on the largest area in India?
83.
Which of the following does not cause losses in optical fiber cables?
84.
In Pulse Code Modulation system
85.
Who is known as “The Saint of Gutters”?
86.
Which of the following devices are commonly used as error detectors in instruments ?
87.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
88.
In an open loop control system
89.
In Modulation, “carrier” is
90.
A semiconductor is formed by……… bonds.
91.
A time invariant system is a system whose output
92.
Which among the following belongs to the category of non-recursive systems?
93.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
94.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
95.
Which of the following should be done to make an unstable system stable ?
96.
The strength of a semiconductor crystal comes from ……..
97.
A hole and electron in close proximity would tend to ……….
98.
For a low level AM system, the amplifiers modulated stage must be
99.
.... is a part of the human temperature control system.
100.
The random motion of holes and free electrons due to thermal agitation is called ……….
