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DATE:-December 22, 2024
1.
The strength of a semiconductor crystal comes from ……..
2.
A control system working under unknown random actions is called
3.
To eliminate ghosts in the picture
4.
Which of the following is an indirect way of generating FM?
5.
Which of the following national parks is not listed in a UNESCO World Heritage site?
6.
Factor the following polynomial expression: x2 −x−12
7.
The sine function is defined as ratio of side lengths,
8.
Manipulate the following equation to solve for x:
9.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
10.
Convert an angle of 75 degrees into radians:
11.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
12.
For a low level AM system, the amplifiers modulated stage must be
13.
Which of the following statements is not necessarily correct for open control system ?
14.
Manipulate the following equation to solve for x: a = √bx2
15.
Complex numbers are used in AC circuit analysis primarily to represent:
16.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
17.
A time invariant system is a system whose output
18.
For open control system which of the following statements is incorrect ?
19.
In Pulse Code Modulation system
20.
Which of the following personalities gave ‘The Laws of Heredity’?
21.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
22.
Reactance bipolar transistor
23.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
24.
A closed loop system is distinguished from open loop system by which of the following ?
25.
Under which conditions does an initially relaxed system become unstable ?
26.
A semiconductor has generally……………… valence electrons.
27.
A good control system has all the following features except
28.
Positive logic in a logic circuit is one in which
29.
The Fourier series of an odd periodic function contains
30.
Which type of system response to its input represents the zero value of its initial condition?
31.
By which of the following the control action is determined when a man walks along a path ?
32.
VSB modulation is preferred in TV because
33.
A control system in which the control action is somehow dependent on the output is known as
34.
In an open loop control system
35.
Any externally introduced signal affecting the controlled output is called a
37.
A semiconductor is formed by……… bonds.
38.
Garampani sanctuary is located at
39.
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
40.
When a pure semiconductor is heated,its resistance …………..
41.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
42.
A signal g(t) = A then g(t) is a
43.
What is the nature of Fourier representation of a discrete & aperiodic signal?
44.
In a semiconductor,current conduction is due to ……..
45.
A pentavalent impurity has……….Valence electrons
46.
Which of the following devices are commonly used as error detectors in instruments ?
47.
Which of the following should be done to make an unstable system stable ?
48.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
49.
The colour of an object is decided by
51.
A hole in a semiconductor is defined as…………….
52.
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.
53.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
54.
Who is known as “The Saint of Gutters”?
55.
Grand Central Terminal, Park Avenue, New York is the world’s
56.
For telegraphy the most commonly used modulation system is
57.
A trivalent impurity has…..valence electrons
58.
The initial response when tne output is not equal to input is called
59.
Commercial Frequency deviation of FM is
60.
Which of the following statements is correct?
61.
Has tendency to oscillate.
62.
A semiconductor has………… temperature coefficient of resistance.
63.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
64.
Double integration of a unit step function would lead to
65.
An n-type semiconductor is………
66.
A system is said to be dened as non causal, when
67.
The frequency range of 300 kHz to 3000 kHz is known as
68.
A modem is classified as low speed if data rate handled is
69.
For attenuation of high frequencies we should use
70.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
71.
Themost commonlyused semiconductoris………..
72.
Which of the following ratios is equivalent to the ratio 25:300 ?
73.
Name the person who was also known as Deshbandhu.
74.
A system which is linear is said to obey the rules of
75.
In Modulation, “carrier” is
76.
Which of the following does not cause losses in optical fiber cables?
77.
A woofer should be fed from the input through a
78.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
79.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
80.
Which of the following is an open loop control system ?
81.
Which among the following belongs to the category of non-recursive systems?
82.
Addition of pentavalent impurity to a semiconductor creates many……..
83.
All causal systems must have the component of
84.
.... is a closed loop system.
85.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
86.
Duality Theorem / Property of Fourier Transform states that _________
87.
The resistivity of pure germanium under standard conditionsis about……….
89.
An automatic toaster is a ______ loop control system.
90.
A hole and electron in close proximity would tend to ……….
91.
Addition of trivalent impurity to a semiconductor creates many……..
93.
Damped sinusoids are _____
94.
The random motion of holes and free electrons due to thermal agitation is called ……….
95.
Which crop is sown on the largest area in India?
96.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
97.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
98.
The resistivity of a pure silicon is about……………
99.
.... is a part of the human temperature control system.
100.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
