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DATE:-August 24, 2026
1.
Factor the following polynomial expression: x2 −x−12
2.
Themost commonlyused semiconductoris………..
3.
Which of the following should be done to make an unstable system stable ?
4.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
5.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
6.
When a pure semiconductor is heated,its resistance …………..
7.
Complex numbers are used in AC circuit analysis primarily to represent:
8.
By which of the following the control action is determined when a man walks along a path ?
9.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
10.
In Modulation, “carrier” is
11.
The Fourier series of an odd periodic function contains
12.
An automatic toaster is a ______ loop control system.
13.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
14.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
15.
Convert an angle of 75 degrees into radians:
16.
The colour of an object is decided by
17.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
18.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
19.
Commercial Frequency deviation of FM is
20.
Manipulate the following equation to solve for x: a = √bx2
21.
Which crop is sown on the largest area in India?
22.
A control system in which the control action is somehow dependent on the output is known as
23.
A system which is linear is said to obey the rules of
24.
Any externally introduced signal affecting the controlled output is called a
25.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
26.
Under which conditions does an initially relaxed system become unstable ?
27.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
28.
A good control system has all the following features except
29.
All causal systems must have the component of
30.
For telegraphy the most commonly used modulation system is
31.
An n-type semiconductor is………
32.
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.
33.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
35.
.... is a part of the human temperature control system.
36.
Has tendency to oscillate.
37.
The sine function is defined as ratio of side lengths,
38.
To eliminate ghosts in the picture
39.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
40.
A woofer should be fed from the input through a
41.
Which of the following devices are commonly used as error detectors in instruments ?
42.
Damped sinusoids are _____
43.
Name the person who was also known as Deshbandhu.
44.
Which of the following statements is not necessarily correct for open control system ?
45.
The random motion of holes and free electrons due to thermal agitation is called ……….
46.
For a low level AM system, the amplifiers modulated stage must be
47.
Which of the following statements is correct?
48.
A system is said to be dened as non causal, when
49.
Double integration of a unit step function would lead to
50.
Which of the following does not cause losses in optical fiber cables?
52.
A time invariant system is a system whose output
54.
Grand Central Terminal, Park Avenue, New York is the world’s
55.
Positive logic in a logic circuit is one in which
56.
Addition of trivalent impurity to a semiconductor creates many……..
57.
The strength of a semiconductor crystal comes from ……..
59.
For attenuation of high frequencies we should use
60.
For open control system which of the following statements is incorrect ?
61.
A hole in a semiconductor is defined as…………….
62.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
63.
A closed loop system is distinguished from open loop system by which of the following ?
64.
A trivalent impurity has…..valence electrons
65.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
66.
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
67.
Duality Theorem / Property of Fourier Transform states that _________
68.
A semiconductor has………… temperature coefficient of resistance.
69.
Addition of pentavalent impurity to a semiconductor creates many……..
70.
Who is known as “The Saint of Gutters”?
71.
A control system working under unknown random actions is called
72.
Which of the following is an open loop control system ?
73.
In Pulse Code Modulation system
74.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
75.
Which of the following personalities gave ‘The Laws of Heredity’?
76.
Which of the following is an indirect way of generating FM?
77.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
78.
The resistivity of pure germanium under standard conditionsis about……….
79.
A semiconductor is formed by……… bonds.
80.
.... is a closed loop system.
81.
A pentavalent impurity has……….Valence electrons
82.
Which type of system response to its input represents the zero value of its initial condition?
83.
A modem is classified as low speed if data rate handled is
84.
A hole and electron in close proximity would tend to ……….
85.
Reactance bipolar transistor
86.
VSB modulation is preferred in TV because
87.
In an open loop control system
88.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
89.
What is the nature of Fourier representation of a discrete & aperiodic signal?
90.
A semiconductor has generally……………… valence electrons.
91.
Garampani sanctuary is located at
92.
Which of the following national parks is not listed in a UNESCO World Heritage site?
93.
Manipulate the following equation to solve for x:
94.
The resistivity of a pure silicon is about……………
95.
Which of the following ratios is equivalent to the ratio 25:300 ?
96.
A signal g(t) = A then g(t) is a
97.
Which among the following belongs to the category of non-recursive systems?
98.
The initial response when tne output is not equal to input is called
99.
The frequency range of 300 kHz to 3000 kHz is known as
100.
In a semiconductor,current conduction is due to ……..
