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DATE:-January 23, 2025
1.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
2.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
3.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
4.
Which of the following national parks is not listed in a UNESCO World Heritage site?
5.
All causal systems must have the component of
6.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
7.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
8.
Garampani sanctuary is located at
9.
VSB modulation is preferred in TV because
10.
For attenuation of high frequencies we should use
11.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
12.
Which of the following ratios is equivalent to the ratio 25:300 ?
13.
The frequency range of 300 kHz to 3000 kHz is known as
14.
Addition of trivalent impurity to a semiconductor creates many……..
15.
A semiconductor is formed by……… bonds.
16.
Convert an angle of 75 degrees into radians:
17.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
19.
Double integration of a unit step function would lead to
20.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
21.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
22.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
23.
When a pure semiconductor is heated,its resistance …………..
24.
Name the person who was also known as Deshbandhu.
25.
A modem is classified as low speed if data rate handled is
26.
The initial response when tne output is not equal to input is called
27.
A good control system has all the following features except
28.
Commercial Frequency deviation of FM is
29.
Under which conditions does an initially relaxed system become unstable ?
30.
What is the nature of Fourier representation of a discrete & aperiodic signal?
31.
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
32.
Grand Central Terminal, Park Avenue, New York is the world’s
34.
An automatic toaster is a ______ loop control system.
35.
To eliminate ghosts in the picture
36.
.... is a closed loop system.
37.
A system which is linear is said to obey the rules of
38.
Complex numbers are used in AC circuit analysis primarily to represent:
39.
.... is a part of the human temperature control system.
40.
Which of the following statements is correct?
41.
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.
42.
Themost commonlyused semiconductoris………..
43.
Which among the following belongs to the category of non-recursive systems?
44.
Damped sinusoids are _____
45.
Manipulate the following equation to solve for x: a = √bx2
46.
Which of the following personalities gave ‘The Laws of Heredity’?
47.
A system is said to be dened as non causal, when
48.
A pentavalent impurity has……….Valence electrons
49.
In a semiconductor,current conduction is due to ……..
50.
Positive logic in a logic circuit is one in which
51.
In an open loop control system
52.
A signal g(t) = A then g(t) is a
53.
Which of the following does not cause losses in optical fiber cables?
54.
A control system working under unknown random actions is called
55.
A closed loop system is distinguished from open loop system by which of the following ?
56.
A hole and electron in close proximity would tend to ……….
57.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
58.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
59.
The Fourier series of an odd periodic function contains
60.
A semiconductor has generally……………… valence electrons.
61.
Which of the following is an open loop control system ?
62.
Manipulate the following equation to solve for x:
63.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
64.
Duality Theorem / Property of Fourier Transform states that _________
65.
Which crop is sown on the largest area in India?
66.
The random motion of holes and free electrons due to thermal agitation is called ……….
67.
Addition of pentavalent impurity to a semiconductor creates many……..
68.
The strength of a semiconductor crystal comes from ……..
70.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
71.
A control system in which the control action is somehow dependent on the output is known as
72.
A time invariant system is a system whose output
73.
Which of the following is an indirect way of generating FM?
74.
For a low level AM system, the amplifiers modulated stage must be
75.
Which of the following statements is not necessarily correct for open control system ?
76.
A trivalent impurity has…..valence electrons
77.
Which of the following should be done to make an unstable system stable ?
78.
A woofer should be fed from the input through a
79.
The sine function is defined as ratio of side lengths,
80.
In Modulation, “carrier” is
81.
For open control system which of the following statements is incorrect ?
82.
Which type of system response to its input represents the zero value of its initial condition?
83.
For telegraphy the most commonly used modulation system is
84.
Any externally introduced signal affecting the controlled output is called a
85.
Has tendency to oscillate.
86.
An n-type semiconductor is………
87.
Who is known as “The Saint of Gutters”?
88.
Reactance bipolar transistor
89.
In Pulse Code Modulation system
90.
The colour of an object is decided by
91.
By which of the following the control action is determined when a man walks along a path ?
92.
A semiconductor has………… temperature coefficient of resistance.
93.
Factor the following polynomial expression: x2 −x−12
94.
Which of the following devices are commonly used as error detectors in instruments ?
95.
A hole in a semiconductor is defined as…………….
96.
The resistivity of a pure silicon is about……………
97.
The resistivity of pure germanium under standard conditionsis about……….
99.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
100.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
