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DATE:-May 5, 2026
1.
Which of the following should be done to make an unstable system stable ?
2.
A control system working under unknown random actions is called
3.
In Pulse Code Modulation system
4.
A system which is linear is said to obey the rules of
5.
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
6.
For attenuation of high frequencies we should use
7.
Which of the following ratios is equivalent to the ratio 25:300 ?
8.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
9.
All causal systems must have the component of
10.
Positive logic in a logic circuit is one in which
11.
Factor the following polynomial expression: x2 −x−12
12.
.... is a closed loop system.
13.
A pentavalent impurity has……….Valence electrons
14.
The sine function is defined as ratio of side lengths,
15.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
16.
Which of the following personalities gave ‘The Laws of Heredity’?
17.
Which of the following is an open loop control system ?
18.
A closed loop system is distinguished from open loop system by which of the following ?
19.
Duality Theorem / Property of Fourier Transform states that _________
20.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
21.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
22.
Name the person who was also known as Deshbandhu.
23.
A hole in a semiconductor is defined as…………….
24.
Which of the following does not cause losses in optical fiber cables?
25.
The Fourier series of an odd periodic function contains
26.
In Modulation, “carrier” is
27.
By which of the following the control action is determined when a man walks along a path ?
28.
To eliminate ghosts in the picture
29.
The colour of an object is decided by
30.
A semiconductor is formed by……… bonds.
31.
Which of the following statements is correct?
32.
Complex numbers are used in AC circuit analysis primarily to represent:
33.
Any externally introduced signal affecting the controlled output is called a
35.
A hole and electron in close proximity would tend to ……….
36.
A signal g(t) = A then g(t) is a
37.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
38.
Commercial Frequency deviation of FM is
39.
A woofer should be fed from the input through a
40.
Who is known as “The Saint of Gutters”?
41.
VSB modulation is preferred in TV because
42.
A control system in which the control action is somehow dependent on the output is known as
43.
Double integration of a unit step function would lead to
44.
The initial response when tne output is not equal to input is called
45.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
46.
A semiconductor has generally……………… valence electrons.
47.
Which of the following is an indirect way of generating FM?
48.
The random motion of holes and free electrons due to thermal agitation is called ……….
49.
A semiconductor has………… temperature coefficient of resistance.
50.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
51.
Addition of pentavalent impurity to a semiconductor creates many……..
52.
For a low level AM system, the amplifiers modulated stage must be
53.
For open control system which of the following statements is incorrect ?
54.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
55.
In an open loop control system
56.
Which crop is sown on the largest area in India?
57.
Which type of system response to its input represents the zero value of its initial condition?
58.
Which of the following devices are commonly used as error detectors in instruments ?
59.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
60.
A modem is classified as low speed if data rate handled is
61.
For telegraphy the most commonly used modulation system is
62.
An n-type semiconductor is………
63.
The frequency range of 300 kHz to 3000 kHz is known as
65.
A system is said to be dened as non causal, when
66.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
67.
Which among the following belongs to the category of non-recursive systems?
68.
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.
69.
Grand Central Terminal, Park Avenue, New York is the world’s
70.
Has tendency to oscillate.
71.
Under which conditions does an initially relaxed system become unstable ?
72.
Addition of trivalent impurity to a semiconductor creates many……..
73.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
74.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
75.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
76.
The resistivity of pure germanium under standard conditionsis about……….
77.
Which of the following statements is not necessarily correct for open control system ?
78.
Themost commonlyused semiconductoris………..
79.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
80.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
81.
Which of the following national parks is not listed in a UNESCO World Heritage site?
82.
Convert an angle of 75 degrees into radians:
83.
What is the nature of Fourier representation of a discrete & aperiodic signal?
84.
An automatic toaster is a ______ loop control system.
86.
The resistivity of a pure silicon is about……………
87.
When a pure semiconductor is heated,its resistance …………..
88.
Manipulate the following equation to solve for x:
89.
A trivalent impurity has…..valence electrons
90.
Garampani sanctuary is located at
91.
A time invariant system is a system whose output
92.
.... is a part of the human temperature control system.
93.
The strength of a semiconductor crystal comes from ……..
94.
Reactance bipolar transistor
95.
Damped sinusoids are _____
96.
Manipulate the following equation to solve for x: a = √bx2
98.
In a semiconductor,current conduction is due to ……..
99.
A good control system has all the following features except
100.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
