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DATE:-March 29, 2024
2.
Under which conditions does an initially relaxed system become unstable ?
3.
.... is a closed loop system.
4.
Manipulate the following equation to solve for x: a = √bx2
5.
An n-type semiconductor is………
6.
Which of the following should be done to make an unstable system stable ?
7.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..
9.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of
10.
A signal g(t) = A then g(t) is a
11.
The resistivity of pure germanium under standard conditionsis about……….
12.
Which type of system response to its input represents the zero value of its initial condition?
13.
Reactance bipolar transistor
14.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication
15.
Which among the following belongs to the category of non-recursive systems?
16.
All causal systems must have the component of
17.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________
18.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
19.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.
20.
Themost commonlyused semiconductoris………..
21.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9
22.
A system is said to be dened as non causal, when
23.
In closed loop control system, with positive value of feedback gain the overall gain of the system will
24.
A hole and electron in close proximity would tend to ……….
25.
In Modulation, “carrier” is
26.
Which of the following does not cause losses in optical fiber cables?
27.
A time invariant system is a system whose output
28.
For attenuation of high frequencies we should use
29.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?
30.
Which of the following statements is correct?
31.
Which of the following statements is not necessarily correct for open control system ?
33.
Commercial Frequency deviation of FM is
34.
For telegraphy the most commonly used modulation system is
35.
Convert an angle of 75 degrees into radians:
36.
A modem is classified as low speed if data rate handled is
37.
Grand Central Terminal, Park Avenue, New York is the world’s
38.
Which of the following is an open loop control system ?
39.
In an open loop control system
40.
A woofer should be fed from the input through a
41.
When a pentavalent impurity is added to a pure semiconductor,it becomes……
42.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
43.
Positive logic in a logic circuit is one in which
44.
VSB modulation is preferred in TV because
45.
Duality Theorem / Property of Fourier Transform states that _________
46.
A closed loop system is distinguished from open loop system by which of the following ?
47.
The initial response when tne output is not equal to input is called
48.
The resistivity of a pure silicon is about……………
49.
The colour of an object is decided by
50.
When a pure semiconductor is heated,its resistance …………..
51.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.
52.
Double integration of a unit step function would lead to
53.
An automatic toaster is a ______ loop control system.
54.
A trivalent impurity has…..valence electrons
55.
Which of the following personalities gave ‘The Laws of Heredity’?
56.
A pentavalent impurity has……….Valence electrons
57.
Name the person who was also known as Deshbandhu.
58.
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.
59.
The strength of a semiconductor crystal comes from ……..
60.
Who is known as “The Saint of Gutters”?
61.
A control system in which the control action is somehow dependent on the output is known as
62.
Complex numbers are used in AC circuit analysis primarily to represent:
63.
The sine function is defined as ratio of side lengths,
64.
For open control system which of the following statements is incorrect ?
65.
A hole in a semiconductor is defined as…………….
66.
A semiconductor is formed by……… bonds.
67.
Which of the following ratios is equivalent to the ratio 25:300 ?
68.
Any externally introduced signal affecting the controlled output is called a
69.
A control system working under unknown random actions is called
70.
Which crop is sown on the largest area in India?
71.
Has tendency to oscillate.
72.
A cordless telephone using separate frequencies for transmission in base and portable units is known as
73.
The frequency range of 300 kHz to 3000 kHz is known as
74.
Garampani sanctuary is located at
75.
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
76.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?
77.
Which of the following is an indirect way of generating FM?
78.
.... is a part of the human temperature control system.
79.
What is the nature of Fourier representation of a discrete & aperiodic signal?
80.
A semiconductor has………… temperature coefficient of resistance.
81.
To eliminate ghosts in the picture
82.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes
84.
In a semiconductor,current conduction is due to ……..
85.
Addition of trivalent impurity to a semiconductor creates many……..
86.
A system which is linear is said to obey the rules of
87.
Which of the following devices are commonly used as error detectors in instruments ?
88.
In Pulse Code Modulation system
89.
Addition of pentavalent impurity to a semiconductor creates many……..
90.
The random motion of holes and free electrons due to thermal agitation is called ……….
91.
The Fourier series of an odd periodic function contains
92.
A good control system has all the following features except
93.
For a low level AM system, the amplifiers modulated stage must be
94.
Which of the following national parks is not listed in a UNESCO World Heritage site?
95.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?
96.
Damped sinusoids are _____
97.
Manipulate the following equation to solve for x:
98.
A semiconductor has generally……………… valence electrons.
99.
By which of the following the control action is determined when a man walks along a path ?
100.
Factor the following polynomial expression: x2 −x−12