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DATE:-February 13, 2026
1.
A trivalent impurity has…..valence electrons
2.
Any externally introduced signal affecting the controlled output is called a
3.
An automatic toaster is a ______ loop control system.
4.
All causal systems must have the component of
5.
Positive logic in a logic circuit is one in which
6.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
7.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
8.
When a pure semiconductor is heated,its resistance …………..
9.
Duality Theorem / Property of Fourier Transform states that _________
10.
Reactance bipolar transistor
11.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
12.
A signal g(t) = A then g(t) is a
13.
.... is a part of the human temperature control system.
14.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
15.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
16.
The colour of an object is decided by
17.
Addition of pentavalent impurity to a semiconductor creates many……..
18.
In Pulse Code Modulation system
19.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
20.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
21.
Has tendency to oscillate.
22.
Garampani sanctuary is located at
23.
For attenuation of high frequencies we should use
24.
The random motion of holes and free electrons due to thermal agitation is called ……….
25.
Themost commonlyused semiconductoris………..
26.
Addition of trivalent impurity to a semiconductor creates many……..
27.
For telegraphy the most commonly used modulation system is
28.
Manipulate the following equation to solve for x:
29.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
30.
A system is said to be dened as non causal, when
31.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
32.
Which type of system response to its input represents the zero value of its initial condition?
33.
Commercial Frequency deviation of FM is
34.
The strength of a semiconductor crystal comes from ……..
35.
A woofer should be fed from the input through a
36.
A closed loop system is distinguished from open loop system by which of the following ?
38.
Which among the following belongs to the category of non-recursive systems?
40.
A semiconductor has………… temperature coefficient of resistance.
41.
A control system working under unknown random actions is called
42.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
43.
A system which is linear is said to obey the rules of
44.
For a low level AM system, the amplifiers modulated stage must be
45.
Who is known as “The Saint of Gutters”?
46.
A modem is classified as low speed if data rate handled is
47.
Grand Central Terminal, Park Avenue, New York is the world’s
48.
Which of the following statements is not necessarily correct for open control system ?
49.
Factor the following polynomial expression: x2 −x−12
50.
Which of the following devices are commonly used as error detectors in instruments ?
51.
Which of the following should be done to make an unstable system stable ?
52.
A semiconductor is formed by……… bonds.
53.
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
54.
A time invariant system is a system whose output
55.
The frequency range of 300 kHz to 3000 kHz is known as
56.
Which of the following ratios is equivalent to the ratio 25:300 ?
57.
Damped sinusoids are _____
58.
A hole in a semiconductor is defined as…………….
59.
An n-type semiconductor is………
60.
.... is a closed loop system.
62.
For open control system which of the following statements is incorrect ?
63.
Which crop is sown on the largest area in India?
64.
Convert an angle of 75 degrees into radians:
65.
Complex numbers are used in AC circuit analysis primarily to represent:
66.
Manipulate the following equation to solve for x: a = √bx2
68.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
69.
Which of the following is an indirect way of generating FM?
70.
What is the nature of Fourier representation of a discrete & aperiodic signal?
71.
Double integration of a unit step function would lead to
72.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
73.
The Fourier series of an odd periodic function contains
74.
To eliminate ghosts in the picture
75.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
76.
Which of the following statements is correct?
77.
VSB modulation is preferred in TV because
78.
The resistivity of pure germanium under standard conditionsis about……….
79.
In Modulation, “carrier” is
80.
In a semiconductor,current conduction is due to ……..
81.
A good control system has all the following features except
82.
A hole and electron in close proximity would tend to ……….
83.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
84.
Name the person who was also known as Deshbandhu.
85.
The sine function is defined as ratio of side lengths,
86.
The initial response when tne output is not equal to input is called
87.
In an open loop control system
88.
Which of the following does not cause losses in optical fiber cables?
89.
The resistivity of a pure silicon is about……………
90.
Which of the following national parks is not listed in a UNESCO World Heritage site?
91.
By which of the following the control action is determined when a man walks along a path ?
92.
Which of the following is an open loop control system ?
93.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
94.
A pentavalent impurity has……….Valence electrons
95.
A semiconductor has generally……………… valence electrons.
96.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
97.
A control system in which the control action is somehow dependent on the output is known as
98.
Which of the following personalities gave ‘The Laws of Heredity’?
99.
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.
100.
Under which conditions does an initially relaxed system become unstable ?
