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DATE:-May 21, 2022

1.
The initial response when tne output is not equal to input is called

2.
Which of the following devices are commonly used as error detectors in instruments ?

3.
Which crop is sown on the largest area in India?

4.
Manipulate the following equation to solve for x: a = √bx2

5.
Double integration of a unit step function would lead to

6.
In Modulation, “carrier” is

7.
Unilateral Laplace Transform is applicable for the determination of linear constant coecient dierential equations with ________

8.
A modem is classified as low speed if data rate handled is

9.
For a low level AM system, the amplifiers modulated stage must be

10.
A hole and electron in close proximity would tend to ……….

11.
A signal g(t) = A then g(t) is a

12.
When a pure semiconductor is heated,its resistance …………..

14.
Addition of pentavalent impurity to a semiconductor creates many……..

15.
In an open loop control system

16.
Under which conditions does an initially relaxed system become unstable ?

17.
Two rectangular waveforms of duration t1 and t2 seconds are convolved. What is the shape of the resulting waveform?

18.
As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes

19.
In Pulse Code Modulation system

20.
Has tendency to oscillate.

21.
The frequency range of 300 kHz to 3000 kHz is known as

22.
A closed loop system is distinguished from open loop system by which of the following ?

23.
Positive logic in a logic circuit is one in which

24.
Which property of periodic signal in DTFS gets completely claried /identied by the equation x (n – n0 )?

25.
The resistivity of a pure silicon is about……………

26.
An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.

28.
A system is said to be dened as non causal, when

29.
A cordless telephone using separate frequencies for transmission in base and portable units is known as

30.
Which of the following should be done to make an unstable system stable ?

31.
For open control system which of the following statements is incorrect ?

33.
The Fourier series of an odd periodic function contains

34.
Garampani sanctuary is located at

35.
Commercial Frequency deviation of FM is

36.
A time invariant system is a system whose output

37.
A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?

38.
Which type of system response to its input represents the zero value of its initial condition?

39.
A control system working under unknown random actions is called

40.
Solve for both x and y in this simultaneous system of equations: x + 3y = −1, 4x−y = 9

41.
Eritrea, which became the 182nd member of the United Nations in 1993, is on the continent of

42.
For telegraphy the most commonly used modulation system is

43.
Which among the following operations is/are not involved /associated with the computation process of linear convolution?

44.
A semiconductor has………… temperature coefficient of resistance.

45.
The colour of an object is decided by

46.
Duality Theorem / Property of Fourier Transform states that _________

47.
An n-type semiconductor is………

48.
To eliminate ghosts in the picture

49.
When a pentavalent impurity is added to a pure semiconductor,it becomes……

50.
If output power of a radio receiver is doubled, its volume is increased by __________ dB.

51.
The resistivity of pure germanium under standard conditionsis about……….

52.
Which of the following national parks is not listed in a UNESCO World Heritage site?

53.
A semiconductor is formed by……… bonds.

54.
What is the nature of Fourier representation of a discrete & aperiodic signal?

55.
Which of the following does not cause losses in optical fiber cables?

56.
Which of the following is an open loop control system ?

57.
Which property of fourier transform gives rise to an additional phase shift of -2? ftd for the generated time delay in the communication

58.
The sine function is deﬁned as ratio of side lengths,

59.
Name the person who was also known as Deshbandhu.

60.
By which of the following the control action is determined when a man walks along a path ?

61.
Addition of trivalent impurity to a semiconductor creates many……..

62.
A good control system has all the following features except

63.
Which among the following belongs to the category of non-recursive systems?

65.
In closed loop control system, with positive value of feedback gain the overall gain of the system will

66.
Factor the following polynomial expression: x2 −x−12

67.
Complex numbers are used in AC circuit analysis primarily to represent:

68.
Any externally introduced signal affecting the controlled output is called a

69.
The impurity level in an extrinsic semiconductor is about…..of pure semiconductor.

70.
A pentavalent impurity has……….Valence electrons

71.
Which of the following statements is not necessarily correct for open control system ?

72.
The strength of a semiconductor crystal comes from ……..

73.
For attenuation of high frequencies we should use

74.
An automatic toaster is a ______ loop control system.

75.
A woofer should be fed from the input through a

76.
Who is known as “The Saint of Gutters”?

77.
Convert an angle of 75 degrees into radians:

78.
Damped sinusoids are _____

79.
In a semiconductor,current conduction is due to ……..

80.
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.

82.
As the doping to a pure semiconductor increases,the bulk resistance of the semiconductor………..

83.
.... is a part of the human temperature control system.

84.
Which of the following is an indirect way of generating FM?

85.
A control system in which the control action is somehow dependent on the output is known as

86.
A hole in a semiconductor is defined as…………….

87.
Which of the following ratios is equivalent to the ratio 25:300 ?

88.
Which of the following statements is correct?

89.
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

90.
Manipulate the following equation to solve for x:

91.
Themost commonlyused semiconductoris………..

92.
Which of the following personalities gave ‘The Laws of Heredity’?

93.
The random motion of holes and free electrons due to thermal agitation is called ……….

94.
All causal systems must have the component of

95.
.... is a closed loop system.

96.
Reactance bipolar transistor

97.
A trivalent impurity has…..valence electrons

98.
Grand Central Terminal, Park Avenue, New York is the world’s

99.
A semiconductor has generally……………… valence electrons.

100.
VSB modulation is preferred in TV because

101.
A system which is linear is said to obey the rules of