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DATE:-September 27, 2023

1.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes

2.
A signal g(t) = A then g(t) is a

3.
.... is a part of the human temperature control system.

4.
A semiconductor is formed by……… bonds.

5.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.

6.
Positive logic in a logic circuit is one in which

7.
Which of the following national parks is not listed in a UNESCO World Heritage site?

8.
The frequency range of 300 kHz to 3000 kHz is known as

9.
In closed loop control system, with positive value of feedback gain the overall gain of the system will

10.
For telegraphy the most commonly used modulation system is

12.
Which of the following ratios is equivalent to the ratio 25:300 ?

13.
Manipulate the following equation to solve for x:

14.
Has tendency to oscillate.

15.
An automatic toaster is a ______ loop control system.

16.
To eliminate ghosts in the picture

17.
The sine function is deﬁned as ratio of side lengths,

18.
Reactance bipolar transistor

19.
In an open loop control system

20.
Commercial Frequency deviation of FM is

21.
Who is known as “The Saint of Gutters”?

22.
For open control system which of the following statements is incorrect ?

23.
When a pure semiconductor is heated,its resistance …………..

24.
A good control system has all the following features except

25.
A woofer should be fed from the input through a

26.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9

27.
A control system working under unknown random actions is called

28.
An n-type semiconductor is………

29.
Double integration of a unit step function would lead to

30.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?

31.
A modem is classified as low speed if data rate handled is

32.
Which type of system response to its input represents the zero value of its initial condition?

33.
The random motion of holes and free electrons due to thermal agitation is called ……….

34.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?

35.
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.

36.
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

38.
A time invariant system is a system whose output

39.
Themost commonlyused semiconductoris………..

40.
The strength of a semiconductor crystal comes from ……..

41.
Which of the following is an indirect way of generating FM?

43.
Which crop is sown on the largest area in India?

44.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..

45.
What is the nature of Fourier representation of a discrete & aperiodic signal?

46.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication

47.
A semiconductor has generally……………… valence electrons.

48.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.

49.
For a low level AM system, the amplifiers modulated stage must be

50.
Addition of pentavalent impurity to a semiconductor creates many……..

51.
The resistivity of a pure silicon is about……………

52.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?

53.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________

54.
In a semiconductor,current conduction is due to ……..

55.
Factor the following polynomial expression: x2 −x−12

56.
Which of the following does not cause losses in optical fiber cables?

57.
Which of the following statements is not necessarily correct for open control system ?

58.
By which of the following the control action is determined when a man walks along a path ?

59.
Manipulate the following equation to solve for x: a = √bx2

60.
A system is said to be dened as non causal, when

62.
The colour of an object is decided by

63.
Which of the following is an open loop control system ?

64.
Convert an angle of 75 degrees into radians:

65.
Which among the following belongs to the category of non-recursive systems?

66.
Duality Theorem / Property of Fourier Transform states that _________

67.
A control system in which the control action is somehow dependent on the output is known as

68.
Grand Central Terminal, Park Avenue, New York is the world’s

69.
Addition of trivalent impurity to a semiconductor creates many……..

70.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of

71.
Under which conditions does an initially relaxed system become unstable ?

72.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?

73.
Complex numbers are used in AC circuit analysis primarily to represent:

74.
A semiconductor has………… temperature coefficient of resistance.

75.
Garampani sanctuary is located at

76.
Which of the following should be done to make an unstable system stable ?

77.
A pentavalent impurity has……….Valence electrons

78.
For attenuation of high frequencies we should use

79.
Any externally introduced signal affecting the controlled output is called a

80.
Which of the following devices are commonly used as error detectors in instruments ?

81.
All causal systems must have the component of

82.
Damped sinusoids are _____

83.
In Pulse Code Modulation system

84.
A cordless telephone using separate frequencies for transmission in base and portable units is known as

85.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.

86.
VSB modulation is preferred in TV because

87.
In Modulation, “carrier” is

88.
.... is a closed loop system.

89.
A trivalent impurity has…..valence electrons

90.
Name the person who was also known as Deshbandhu.

91.
A hole in a semiconductor is defined as…………….

92.
The Fourier series of an odd periodic function contains

93.
Which of the following personalities gave ‘The Laws of Heredity’?

94.
A closed loop system is distinguished from open loop system by which of the following ?

95.
When a pentavalent impurity is added to a pure semiconductor,it becomes……

96.
A system which is linear is said to obey the rules of

97.
Which of the following statements is correct?

98.
The initial response when tne output is not equal to input is called

99.
A hole and electron in close proximity would tend to ……….

100.
The resistivity of pure germanium under standard conditionsis about……….