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DATE:-November 22, 2024
1.
Under which conditions does an initially relaxed system become unstable ?
2.
Which of the following is an open loop control system ?
3.
Grand Central Terminal, Park Avenue, New York is the world’s
4.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
6.
All causal systems must have the component of
7.
The resistivity of pure germanium under standard conditionsis about……….
8.
For open control system which of the following statements is incorrect ?
9.
A closed loop system is distinguished from open loop system by which of the following ?
10.
A control system working under unknown random actions is called
11.
Damped sinusoids are _____
12.
A good control system has all the following features except
13.
For attenuation of high frequencies we should use
14.
The random motion of holes and free electrons due to thermal agitation is called ……….
15.
A trivalent impurity has…..valence electrons
16.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
17.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
18.
Which of the following does not cause losses in optical fiber cables?
19.
VSB modulation is preferred in TV because
20.
Addition of trivalent impurity to a semiconductor creates many……..
21.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
22.
When a pure semiconductor is heated,its resistance …………..
24.
What is the nature of Fourier representation of a discrete & aperiodic signal?
25.
A control system in which the control action is somehow dependent on the output is known as
26.
Which of the following ratios is equivalent to the ratio 25:300 ?
27.
The frequency range of 300 kHz to 3000 kHz is known as
29.
Has tendency to oscillate.
30.
Convert an angle of 75 degrees into radians:
31.
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.
32.
The resistivity of a pure silicon is about……………
33.
For a low level AM system, the amplifiers modulated stage must be
34.
A system is said to be dened as non causal, when
35.
The strength of a semiconductor crystal comes from ……..
36.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
37.
A system which is linear is said to obey the rules of
38.
Name the person who was also known as Deshbandhu.
39.
A woofer should be fed from the input through a
40.
Which type of system response to its input represents the zero value of its initial condition?
41.
An n-type semiconductor is………
42.
.... is a closed loop system.
43.
Reactance bipolar transistor
44.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
45.
Positive logic in a logic circuit is one in which
46.
Manipulate the following equation to solve for x:
47.
Who is known as “The Saint of Gutters”?
48.
By which of the following the control action is determined when a man walks along a path ?
49.
Garampani sanctuary is located at
50.
Which of the following statements is not necessarily correct for open control system ?
51.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
52.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
53.
Double integration of a unit step function would lead to
54.
Which of the following national parks is not listed in a UNESCO World Heritage site?
55.
A hole in a semiconductor is defined as…………….
56.
Which of the following personalities gave ‘The Laws of Heredity’?
57.
Factor the following polynomial expression: x2 −x−12
58.
A signal g(t) = A then g(t) is a
59.
A hole and electron in close proximity would tend to ……….
60.
Which of the following statements is correct?
61.
Any externally introduced signal affecting the controlled output is called a
62.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
63.
The Fourier series of an odd periodic function contains
64.
Themost commonlyused semiconductoris………..
65.
Which of the following is an indirect way of generating FM?
66.
A semiconductor is formed by……… bonds.
67.
Which of the following should be done to make an unstable system stable ?
68.
A semiconductor has………… temperature coefficient of resistance.
69.
The initial response when tne output is not equal to input is called
70.
To eliminate ghosts in the picture
72.
In Modulation, “carrier” is
73.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
74.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
75.
.... is a part of the human temperature control system.
76.
An automatic toaster is a ______ loop control system.
77.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
78.
The sine function is defined as ratio of side lengths,
79.
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
80.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
81.
Duality Theorem / Property of Fourier Transform states that _________
82.
Which among the following belongs to the category of non-recursive systems?
83.
A modem is classified as low speed if data rate handled is
84.
Complex numbers are used in AC circuit analysis primarily to represent:
85.
A semiconductor has generally……………… valence electrons.
86.
A time invariant system is a system whose output
87.
In Pulse Code Modulation system
88.
For telegraphy the most commonly used modulation system is
89.
Manipulate the following equation to solve for x: a = √bx2
90.
Which crop is sown on the largest area in India?
91.
Addition of pentavalent impurity to a semiconductor creates many……..
92.
In an open loop control system
93.
A pentavalent impurity has……….Valence electrons
94.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
95.
Which of the following devices are commonly used as error detectors in instruments ?
96.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
97.
The colour of an object is decided by
98.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
99.
Commercial Frequency deviation of FM is
100.
In a semiconductor,current conduction is due to ……..
