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DATE:-August 24, 2026
1.
In a semiconductor,current conduction is due to ……..
2.
Which of the following is an open loop control system ?
3.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
4.
Factor the following polynomial expression: x2 −x−12
5.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
6.
Under which conditions does an initially relaxed system become unstable ?
7.
Addition of pentavalent impurity to a semiconductor creates many……..
8.
The resistivity of pure germanium under standard conditionsis about……….
9.
A woofer should be fed from the input through a
10.
Which of the following does not cause losses in optical fiber cables?
11.
Convert an angle of 75 degrees into radians:
12.
Which crop is sown on the largest area in India?
14.
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.
15.
Themost commonlyused semiconductoris………..
16.
A semiconductor has………… temperature coefficient of resistance.
17.
When a pure semiconductor is heated,its resistance …………..
18.
Garampani sanctuary is located at
19.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
20.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
21.
All causal systems must have the component of
22.
The colour of an object is decided by
23.
A time invariant system is a system whose output
24.
The resistivity of a pure silicon is about……………
25.
The frequency range of 300 kHz to 3000 kHz is known as
26.
Name the person who was also known as Deshbandhu.
27.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
29.
Who is known as “The Saint of Gutters”?
30.
What is the nature of Fourier representation of a discrete & aperiodic signal?
31.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
32.
Which of the following statements is correct?
33.
In an open loop control system
34.
In Modulation, “carrier” is
36.
Positive logic in a logic circuit is one in which
37.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
38.
A system which is linear is said to obey the rules of
39.
Addition of trivalent impurity to a semiconductor creates many……..
40.
A semiconductor has generally……………… valence electrons.
41.
Which of the following national parks is not listed in a UNESCO World Heritage site?
42.
Which of the following devices are commonly used as error detectors in instruments ?
43.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
44.
The Fourier series of an odd periodic function contains
45.
Which of the following is an indirect way of generating FM?
46.
Manipulate the following equation to solve for x:
47.
A hole in a semiconductor is defined as…………….
48.
Any externally introduced signal affecting the controlled output is called a
49.
Manipulate the following equation to solve for x: a = √bx2
50.
For a low level AM system, the amplifiers modulated stage must be
51.
An automatic toaster is a ______ loop control system.
52.
Damped sinusoids are _____
53.
A trivalent impurity has…..valence electrons
54.
A signal g(t) = A then g(t) is a
55.
For attenuation of high frequencies we should use
56.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
57.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
58.
Commercial Frequency deviation of FM is
59.
A closed loop system is distinguished from open loop system by which of the following ?
60.
The strength of a semiconductor crystal comes from ……..
61.
Has tendency to oscillate.
62.
A control system in which the control action is somehow dependent on the output is known as
63.
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
64.
.... is a closed loop system.
65.
A control system working under unknown random actions is called
66.
By which of the following the control action is determined when a man walks along a path ?
67.
Double integration of a unit step function would lead to
68.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
69.
An n-type semiconductor is………
70.
To eliminate ghosts in the picture
71.
Which type of system response to its input represents the zero value of its initial condition?
72.
A hole and electron in close proximity would tend to ……….
73.
Grand Central Terminal, Park Avenue, New York is the world’s
74.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
75.
Which of the following ratios is equivalent to the ratio 25:300 ?
76.
The initial response when tne output is not equal to input is called
77.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
78.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
79.
For open control system which of the following statements is incorrect ?
80.
A modem is classified as low speed if data rate handled is
81.
The sine function is defined as ratio of side lengths,
82.
Which among the following belongs to the category of non-recursive systems?
84.
Which of the following personalities gave ‘The Laws of Heredity’?
85.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
86.
Which of the following statements is not necessarily correct for open control system ?
87.
A semiconductor is formed by……… bonds.
88.
Complex numbers are used in AC circuit analysis primarily to represent:
89.
VSB modulation is preferred in TV because
90.
For telegraphy the most commonly used modulation system is
91.
In Pulse Code Modulation system
92.
A system is said to be dened as non causal, when
93.
Which of the following should be done to make an unstable system stable ?
94.
A good control system has all the following features except
95.
.... is a part of the human temperature control system.
96.
A pentavalent impurity has……….Valence electrons
97.
Duality Theorem / Property of Fourier Transform states that _________
98.
Reactance bipolar transistor
99.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
100.
The random motion of holes and free electrons due to thermal agitation is called ……….
