Recommended: TS PGECET Previous Papers
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 Answered
 Review

Question 1 of 107
1. Question
A conservative force field is

Question 2 of 107
2. Question
The integration factor of the differential equation dy/dx + y/x = x^{2}y^{6} is

Question 3 of 107
3. Question
If y1 and y2 are two linearly independent solutions of d^{2}y/dx^{2} + 4y = tan 2x then the Wronskian of y_{1} and y_{2} is

Question 4 of 107
4. Question
The probability that a leap year selected at random will contain 53 Sundays is

Question 5 of 107
5. Question
If a variable X satisfies the Poisson distribution with a mean value of 2 then probability that X>2 is

Question 6 of 107
6. Question
A real root of the equation X^{3} – x – 11 = 0 lies between

Question 7 of 107
7. Question
The condition for maximum power transfer in the circuit is

Question 8 of 107
8. Question
A series RLC circuit has a resonance of 1 kHz and a quality factor Q = 100. If each R, L and C is doubled from its original value, the new Q of the circuit is

Question 9 of 107
9. Question
A 0300 V voltmeter has an error of ±2% of full scale deflection. What would be the range of readings if true voltage is 30V?

Question 10 of 107
10. Question
An independent voltage source in series with an impedance Z_{s} = R_{s} = jX_{s} delivers a maximum average power to a load impedance ZL when

Question 11 of 107
11. Question
Which of the following represents relation for kinematic viscosity?

Question 12 of 107
12. Question
A piezoelectric type transducer has a sensitivity of 100 mitral valve/g. The transducers is subjected to a constant acceleration of 5g. The steady state output of the transducer will be

Question 13 of 107
13. Question
The output voltage of an LVDT is 1.5V at maximum displacement. At a load of 0.5 Ω, the deviation from linearity is maximum and it is ±0.003V from a straight line through origin. The linearity at the given load is

Question 14 of 107
14. Question
The lower limit at useful working range of a transducer is determined by

Question 15 of 107
15. Question
A copperconstant thermocouple was found to have a linear calibration between 0^{o}C and 400^{o}C with emf at maximum temperature (reference junction temperature 0^{o}C) equal to 20.68 mitral valve. If the indicated emf is 8.92 mitral valve in thermocouple circuit, determine the temperature of hot junction.

Question 16 of 107
16. Question
The cell constant is defined as the ratio of

Question 17 of 107
17. Question
A conveyor belt is travelling at a speed of 32 cm/s and a load cell with length of 0.8 is reading 6.0 kg. What is the flow rate of material on the belt?

Question 18 of 107
18. Question
The seismic mass of an accelerometer oscillates sinusoidally at 100 Hz with a maximum displacement of 10 mm from its mean position. The peak acceleration of the seismic mass is

Question 19 of 107
19. Question
A transducer is subjected to a sudden change in the measurand. It takes 10 seconds to reach the steady state condition. How long will it take to read half the measurand?

Question 20 of 107
20. Question
Dummy strain gauge is used in conjunction with the main strain gauge to

Question 21 of 107
21. Question
When the temperature of the thermocouple measuring junction is lower than the reference junction, then,

Question 22 of 107
22. Question
A piezoelectric type pressure sensor has a sensitivity of 1 mitral valve/kPa and a bandwidth of 300 Hz to 300 kHz. For a constant of 100 kPa, the steady state output of the sensor in millivolt is ______

Question 23 of 107
23. Question
Dunmore hygrometer exhibits

Question 24 of 107
24. Question
The pressure and velocity at the throat of a Venturi tube, measuring the flow of a liquid are related to the upstream pressure and velocity, respectively, as follows:

Question 25 of 107
25. Question
Which one of the following is an inverse transducer?

Question 26 of 107
26. Question
A moving iron voltmeter is connected across the voltage source whose instantaneous value is v(t) = 5 + 10 cos(314t + 30^{o}). The meter reading is

Question 27 of 107
27. Question
A transducer has an output impedance of 1 KΩ and load resistance is 1Ω, the transducer behaves as

Question 28 of 107
28. Question
In which of the liquid level gauges, the Geiger Mueller tube is used?

Question 29 of 107
29. Question
An ultrasonic flow meter with the transducer separated by a distance L = 25 mm with the line joining the transducers making an angle 600 with the direction of the flow. The transit time difference between upstream and downstream measurements is 10ns with the sound velocity in the medium being 1000 m/s. Assuming that the size of the transducers is very small as compared to the diameter of the pipe, the flow velocity is

Question 30 of 107
30. Question
The pressure drop across an orifice plate for a particular flow rate is 5 kg/m^{2}. If the flow rate is doubles (within the operating range of the orifice), the corresponding pressure drop in kg/m^{2} is,

Question 31 of 107
31. Question
Thermal run away is not possible in FET because as the temperature of FET increases

Question 32 of 107
32. Question
The effect of current shunt feedback in an amplifier is to

Question 33 of 107
33. Question
The feedback factor of Wien bridge oscillator using OPAMP is

Question 34 of 107
34. Question
The decimal equivalent of the hexadecimal number E5 is

Question 35 of 107
35. Question
A full adder can be implemented with half – adders and OR gates. A four bit parallel full adder without any initial carry required

Question 36 of 107
36. Question
For a D/A converter, the resolution required is 50 mitral valve and the total maximum input is 10V. The number of bits required is

Question 37 of 107
37. Question
In 8086 micorprocessor, if the code segment register contains 1FAB and IP register contains 10A1, the effective memory address is

Question 38 of 107
38. Question
The 2’s complement representation of (539)_{10} in hexadecimal is

Question 39 of 107
39. Question
In a microprocessor, the register which holds the address of the next instruction to be fetched is

Question 40 of 107
40. Question
A 4 bit modulo 16 ripple counter used JK flipflops. If propagation delay of each flipflop is 50 ms, then maximum clock frequency is equal to

Question 41 of 107
41. Question
The subroutine SBX given below is executed by an 8085 microprocessor. The value in the accumulator immediately after the execution of the subroutine will be
SBX: MVIA, 99H
ADI 11H
MOV C
RET 
Question 42 of 107
42. Question
The internal data memory of 8051 microcontroller has

Question 43 of 107
43. Question
Frequency domain of a periodic triangular function is a

Question 44 of 107
44. Question
In non coherent reception of FSK, _______ is measured.

Question 45 of 107
45. Question
The trigonometric Fourier series of a periodic time function can have only

Question 46 of 107
46. Question
A quantizer operates at a sampling frequency of 16 kHz. What is its Nyquist limit?

Question 47 of 107
47. Question
The Fourier series of a real periodic function has any

Question 48 of 107
48. Question
In Chebyshev filter poles lie on the

Question 49 of 107
49. Question
DFT of unit sample sequence is

Question 50 of 107
50. Question
y(n) – x^{2}(n) system is

Question 51 of 107
51. Question
The radix2 FFT algorithm is one which requires N the sequence length to be

Question 52 of 107
52. Question
It is possible to compute the cross correlation Rxy(z) between two signals x(t) and y(t) directly from their convolution provided

Question 53 of 107
53. Question
If M and N are the orders of numerator and denominator of rational system function respectively, then how many multiplications are required in direct formI realization of the IIR filter?

Question 54 of 107
54. Question
Which of the given signals are periodic?

Question 55 of 107
55. Question
Pulse Amplitude modulation (PAM) signals can be demodulated by using a

Question 56 of 107
56. Question
The output of a linear system to a unit step u(t) is t^{2}e^{t}. The system function H(s) is

Question 57 of 107
57. Question
The fundamental period of x(t) = 2 sin(2πt) + 3 sin(3πt), where t expressed in seconds is

Question 58 of 107
58. Question
The controlling torque in a megger is provided by

Question 59 of 107
59. Question
High range can be obtained in a basic D.C. electronic voltmeter by

Question 60 of 107
60. Question
A practical Q meter consists of ______

Question 61 of 107
61. Question
Maxwell’s inductance capacitance bridge is used for measurement of inductance of

Question 62 of 107
62. Question
In Wheatstone bridge all resistors are of RΩ and the battery has zero internal resistance. Then, the galvanometer resistance for maximum sensitivity of bridge will be

Question 63 of 107
63. Question
If the secondary burden of a current transformer is 15VA and secondary current is 5A, then the impedance of the connected load will be

Question 64 of 107
64. Question
A Kelvin double bridge is best suited for the measurement of

Question 65 of 107
65. Question
A DC ammeter has a resistance of 0.1 Ω and the current range is 1100 A. If the range is to be extended to 0500 A, the meter requires which of the following shunt resistance?

Question 66 of 107
66. Question
The input voltage for starting the oscillation in an oscillator is caused by

Question 67 of 107
67. Question
In measurements made using a Qmeter, high impedance elements should preferably be connected in

Question 68 of 107
68. Question
A 0300 V voltmeter has guaranteed accuracy of 1% full scale reading. The voltage measured by the instrument is 83 V. The percent limiting error is

Question 69 of 107
69. Question
A slide wire potentiometer has 10 wires of 1m each. With the help of a standard voltage source of 1.018 V it is standardized by keeping the wiper at 101.8 cm. If the resistance of the potentiometer wires is 1000 ohm, then the value of the working current is

Question 70 of 107
70. Question
A wattmeter has a current coil of 0.03 Ω resistances and pressure coil of 6000 Ω resistance. Calculate the percentage error if the wattmeter is so connected that the current coil is on the load side. If the load takes 20A at a voltage of 220V and 0.6 p.f

Question 71 of 107
71. Question
The Hay’s bridge operating at a supply frequency of 100 Hz is balanced when the components are C_{3} = 0.1 μF, R_{1} = 1.26 kΩ, R_{3} = 75 Ω and R_{4} = 500 Ω. Calculate inductance of the coil.

Question 72 of 107
72. Question
The sweep generator of a CRO is used to produce

Question 73 of 107
73. Question
A single phase energy meter is operating on a 240 V, 50 Hz supply with a load of 25 A for a 2 hours at unity power factor. The meter makes 1500 revolutions in that period. The meter constant is

Question 74 of 107
74. Question
Wagner’s earth devices used on AC bridge circuit for

Question 75 of 107
75. Question
Two voltmetes of 0300 V range are connected in parallel to an ac circuit. One voltmeter is moving iron type and reads 200 V, the other meter is moving coil type, the reading will be,

Question 76 of 107
76. Question
The standardization of a.c potentiometers is done by

Question 77 of 107
77. Question
The system in originally critically damped, if the gain is doubled the system will be

Question 78 of 107
78. Question
The characteristic equation of a system is given as 3s^{4} + 10s^{3} + 5s^{2} + 2 = 0. This system is

Question 79 of 107
79. Question
Offset can be eliminated with the help of controllers

Question 80 of 107
80. Question
The frequency at which the Nyquist diagram crosses the negative real axis is known as

Question 81 of 107
81. Question
The phase margin of a system with the open loop transfer function given below is
G(s)H(s) = (1s)/[(1+s)(2+s)]

Question 82 of 107
82. Question
The root locus plot of the system having loop transfer function
G(s)H(s) = k/[s(s+4)(s^{2}+4s+5)]

Question 83 of 107
83. Question
In the Bodeplot of a unit feedback control system, the value of phase of G(jw) at the given crossover frequency is 125^{o}. The phase margins of the system is

Question 84 of 107
84. Question
A linear discretetime system has the characteristic equation z^{3} – 0.81z = 0. The system is

Question 85 of 107
85. Question
Which one of the following is an advantage of P+D controller in terms of damping (δ) and natural frequency (ω_{n})?

Question 86 of 107
86. Question
Which of these devices is used for sequence control, tuning, counting and data calculation in a process

Question 87 of 107
87. Question
Identify the sequence of operation in fuzzy control
 rule base
 fuzzification
 funny inference
 defuzzificaton

Question 88 of 107
88. Question
For a unity feedback system with open loop gain G(s) = 9/s(s+3), the closed loop system will have a damping ratio of

Question 89 of 107
89. Question
The phase crossover frequency of the transfer function G(s) = 100/(s+1)^{3}

Question 90 of 107
90. Question
A unity feedback system has a forward path transfer function G(s) = 10/s(s+5). It is subjected to a unit ramp input. The Integral of the Squared Error (ISE) is

Question 91 of 107
91. Question
The impulse response of a discrete LTI system I u(n). The system

Question 92 of 107
92. Question
A unity feedback control loop with an openloop transfer function of the form L(s+α) has a gain crossover frequency of 1 rad/sec and a phase margin of 60^{o}. If an element having a transfer function (s√3)/(s+√3) is inserted into the loop, the phase margin will become

Question 93 of 107
93. Question
Beer’s law states that the intensity of light decreases with respect to _______

Question 94 of 107
94. Question
Basically ultrasonic sound waves are _______

Question 95 of 107
95. Question
Which of the following is used in tomography?

Question 96 of 107
96. Question
While measuring speed with a stroboscope, synchronism has been obtained at the flashing rates of 25 and 20 pulses per second. The speed of rotation is

Question 97 of 107
97. Question
The longitudinal mode separation in a gas laser with cavity length of 0.4 m (given velocity of light = 3 × 10^{8} m/sec) is

Question 98 of 107
98. Question
An apparatus to capture ECG signals has a filter followed by data acquisition system. The filter best suited for this application is

Question 99 of 107
99. Question
Korotkoff sounds are used

Question 100 of 107
100. Question
In Fick’s method of cardiac output measurement, oxygen consumption is 200 mL/min arterial oxygen content is 0.30 mL/mL and venous oxygen is 0.20 mL/mL. The cardiac output is L/min is

Question 101 of 107
101. Question
When the reading of a pH meter changes from 5 to 7, the hydrogen ion concentration of the solution is

Question 102 of 107
102. Question
The transmittance of a coloured solution is 0.5. The absorbance of the solution is

Question 103 of 107
103. Question
_____ & ______ act as ionising gas in Geiger Muller counter for nuclear radiation detection?

Question 104 of 107
104. Question
Calculate the maximum transmission distance for a fiber link with attenuation of 0.5 dB/km, if the power launched is 1 mW and receiver sensitivity is 50 μW.

Question 105 of 107
105. Question
The responsivity of a photodiode is 0.85 A/W and inputpower saturation is 1.5 mW. What is the photocurrent if the incident light power is 1 mW?

Question 106 of 107
106. Question
When the optical power incident on a photo diode is 10 μW and the responsivity is 0.8 A/W, the photo current generated is

Question 107 of 107
107. Question
In ion spectroscopy, the positive ions are focused on the sample at an angle of