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DATE:-August 3, 2026
1.
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.
2.
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
3.
Which type of system response to its input represents the zero value of its initial condition?
4.
The resistivity of a pure silicon is about……………
5.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
6.
All causal systems must have the component of
7.
The random motion of holes and free electrons due to thermal agitation is called ……….
8.
Garampani sanctuary is located at
10.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
11.
Name the person who was also known as Deshbandhu.
12.
.... is a closed loop system.
13.
The frequency range of 300 kHz to 3000 kHz is known as
14.
An automatic toaster is a ______ loop control system.
15.
A pentavalent impurity has……….Valence electrons
16.
A good control system has all the following features except
17.
A system which is linear is said to obey the rules of
18.
A semiconductor is formed by……… bonds.
19.
Under which conditions does an initially relaxed system become unstable ?
20.
For a low level AM system, the amplifiers modulated stage must be
21.
Manipulate the following equation to solve for x:
22.
A control system working under unknown random actions is called
23.
What is the nature of Fourier representation of a discrete & aperiodic signal?
24.
Which of the following ratios is equivalent to the ratio 25:300 ?
25.
A semiconductor has generally……………… valence electrons.
26.
Complex numbers are used in AC circuit analysis primarily to represent:
27.
A hole and electron in close proximity would tend to ……….
28.
For telegraphy the most commonly used modulation system is
29.
For attenuation of high frequencies we should use
30.
When a pure semiconductor is heated,its resistance …………..
31.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
32.
In Pulse Code Modulation system
33.
In Modulation, “carrier” is
34.
The Fourier series of an odd periodic function contains
35.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
36.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
37.
Which of the following does not cause losses in optical fiber cables?
38.
Manipulate the following equation to solve for x: a = √bx2
39.
Factor the following polynomial expression: x2 −x−12
40.
Which of the following should be done to make an unstable system stable ?
41.
VSB modulation is preferred in TV because
42.
Addition of trivalent impurity to a semiconductor creates many……..
43.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
44.
Which of the following statements is correct?
45.
For open control system which of the following statements is incorrect ?
46.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
47.
Convert an angle of 75 degrees into radians:
48.
Who is known as “The Saint of Gutters”?
49.
Which of the following devices are commonly used as error detectors in instruments ?
50.
Reactance bipolar transistor
51.
The strength of a semiconductor crystal comes from ……..
52.
An n-type semiconductor is………
53.
A hole in a semiconductor is defined as…………….
55.
Damped sinusoids are _____
56.
The resistivity of pure germanium under standard conditionsis about……….
57.
Has tendency to oscillate.
58.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
59.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
60.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
61.
.... is a part of the human temperature control system.
62.
Grand Central Terminal, Park Avenue, New York is the world’s
63.
A woofer should be fed from the input through a
64.
In a semiconductor,current conduction is due to ……..
65.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
66.
Addition of pentavalent impurity to a semiconductor creates many……..
67.
Which of the following national parks is not listed in a UNESCO World Heritage site?
68.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
69.
A modem is classified as low speed if data rate handled is
70.
A system is said to be dened as non causal, when
71.
Any externally introduced signal affecting the controlled output is called a
72.
A signal g(t) = A then g(t) is a
73.
Which of the following personalities gave ‘The Laws of Heredity’?
74.
Which of the following statements is not necessarily correct for open control system ?
75.
The initial response when tne output is not equal to input is called
76.
A closed loop system is distinguished from open loop system by which of the following ?
77.
Positive logic in a logic circuit is one in which
78.
By which of the following the control action is determined when a man walks along a path ?
79.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
80.
Commercial Frequency deviation of FM is
81.
Double integration of a unit step function would lead to
82.
Which among the following belongs to the category of non-recursive systems?
83.
Which crop is sown on the largest area in India?
84.
A semiconductor has………… temperature coefficient of resistance.
85.
A control system in which the control action is somehow dependent on the output is known as
86.
Themost commonlyused semiconductoris………..
87.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
88.
The sine function is defined as ratio of side lengths,
90.
A time invariant system is a system whose output
91.
Which of the following is an indirect way of generating FM?
92.
A trivalent impurity has…..valence electrons
93.
Which of the following is an open loop control system ?
94.
To eliminate ghosts in the picture
95.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
96.
Duality Theorem / Property of Fourier Transform states that _________
97.
In an open loop control system
98.
The colour of an object is decided by
100.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
