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DATE:-July 13, 2026
1.
.... is a closed loop system.
2.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
3.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
4.
A control system in which the control action is somehow dependent on the output is known as
5.
A hole and electron in close proximity would tend to ……….
6.
When a pure semiconductor is heated,its resistance …………..
7.
Under which conditions does an initially relaxed system become unstable ?
8.
VSB modulation is preferred in TV because
9.
Grand Central Terminal, Park Avenue, New York is the world’s
10.
Complex numbers are used in AC circuit analysis primarily to represent:
11.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
12.
The sine function is defined as ratio of side lengths,
13.
Has tendency to oscillate.
14.
Which of the following does not cause losses in optical fiber cables?
15.
Which of the following ratios is equivalent to the ratio 25:300 ?
16.
Which of the following statements is correct?
17.
A semiconductor is formed by……… bonds.
18.
To eliminate ghosts in the picture
19.
A control system working under unknown random actions is called
20.
A signal g(t) = A then g(t) is a
21.
Garampani sanctuary is located at
22.
For open control system which of the following statements is incorrect ?
23.
A system is said to be dened as non causal, when
24.
Positive logic in a logic circuit is one in which
25.
A pentavalent impurity has……….Valence electrons
26.
What is the nature of Fourier representation of a discrete & aperiodic signal?
27.
All causal systems must have the component of
28.
A semiconductor has………… temperature coefficient of resistance.
29.
Which type of system response to its input represents the zero value of its initial condition?
30.
Which of the following national parks is not listed in a UNESCO World Heritage site?
31.
A hole in a semiconductor is defined as…………….
32.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
33.
The frequency range of 300 kHz to 3000 kHz is known as
34.
The resistivity of pure germanium under standard conditionsis about……….
35.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
36.
Duality Theorem / Property of Fourier Transform states that _________
37.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
38.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
39.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
40.
By which of the following the control action is determined when a man walks along a path ?
41.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
42.
Addition of trivalent impurity to a semiconductor creates many……..
43.
Who is known as “The Saint of Gutters”?
44.
Addition of pentavalent impurity to a semiconductor creates many……..
45.
A time invariant system is a system whose output
46.
Which of the following personalities gave ‘The Laws of Heredity’?
47.
Which of the following statements is not necessarily correct for open control system ?
48.
The colour of an object is decided by
49.
Themost commonlyused semiconductoris………..
50.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
52.
Double integration of a unit step function would lead to
53.
A modem is classified as low speed if data rate handled is
54.
.... is a part of the human temperature control system.
55.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
56.
Manipulate the following equation to solve for x:
57.
Which among the following belongs to the category of non-recursive systems?
58.
A good control system has all the following features except
59.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
60.
Damped sinusoids are _____
61.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
62.
For attenuation of high frequencies we should use
63.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
64.
In an open loop control system
65.
In a semiconductor,current conduction is due to ……..
66.
For telegraphy the most commonly used modulation system is
67.
For a low level AM system, the amplifiers modulated stage must be
68.
An automatic toaster is a ______ loop control system.
69.
Commercial Frequency deviation of FM is
70.
In Pulse Code Modulation system
71.
An n-type semiconductor is………
72.
Name the person who was also known as Deshbandhu.
73.
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
74.
The initial response when tne output is not equal to input is called
75.
Which of the following is an indirect way of generating FM?
76.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
77.
The strength of a semiconductor crystal comes from ……..
79.
Which of the following is an open loop control system ?
80.
The Fourier series of an odd periodic function contains
81.
The random motion of holes and free electrons due to thermal agitation is called ……….
82.
Any externally introduced signal affecting the controlled output is called a
83.
A woofer should be fed from the input through a
84.
Reactance bipolar transistor
85.
The resistivity of a pure silicon is about……………
86.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
87.
A system which is linear is said to obey the rules of
89.
Factor the following polynomial expression: x2 −x−12
90.
Which of the following devices are commonly used as error detectors in instruments ?
91.
A semiconductor has generally……………… valence electrons.
92.
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.
93.
A closed loop system is distinguished from open loop system by which of the following ?
94.
Convert an angle of 75 degrees into radians:
95.
Manipulate the following equation to solve for x: a = √bx2
97.
Which crop is sown on the largest area in India?
98.
In Modulation, “carrier” is
99.
Which of the following should be done to make an unstable system stable ?
100.
A trivalent impurity has…..valence electrons
