LECTURER IN ELECTRONICS AND INSTRUMENTATION - POLYTECHNICS - TECHNICAL EDUCATION.pdf (Size: 1.47 MB / Downloads: 1)

1.The first printing in Malayalam was done by :
(A)Jovannes Gonsalves(B) Herman Guntert
(C ) Rev. Dawson(D) Rev. Meed

2.Who issued orders allowing the Channar women to wear jacket?
(A)Macaulay Col.(B) Thomas Warden 
(D) Wellesley
(C )Col.Munroe
 
3.Which is the first travelogue in Malayalam : 
(A) Rajyasamacharam (C ) Vedatarkam (B) Samshepavedatarkam (D) Varthamana Pusthakam

4. Kerala Sahitya Chari tram was written by : 
(A) Vallathol (C ) Cherussery
(B) Ullur
(D) Ezhuthachan

5.The first Keralite who had participated in the activities of the Congress was :
(A)G.P. Pillai(B) K. Kelappan
(C ) C. Sankaran Nair(D) S. K. Nair

6.Who organized the literary association called Vidyaposhini?
(A)T.K. Madhavan(B)C. Krishan
(C )K.P. Kesava Menon(D)K. Ayyappan

7.The Sheetankan Tullal was the art form of:
(A)Parayas(B)Kaniyans
(C )Pulayas(D)Vellalas

8.Who was the first national leader to articulate the idea ‘Constituent Assembly’?
(A)B.R. Ambedkar(B)Jawaharlal Nehru
(C ) Rajendra Prasad(D) Mahatma Gandhi

9.Who was the founder of the Kochi Pulaya Mahasabha?
(A)Ayyankali(B)C. Krishnan
(C )K. Kelappan(D)K.P. Karuppan

10.took the initiative of spreading the English education in the area of Malabar.
(B) LMS
(D) Salvation Army
(A) CM.S (C ) B.EM

11.For any square matrix A, A - AT is a :
(A) Skew - symmetric matrix (C ) Symmetric matrix

12.If sin A = cos A, 0* < A < 90*, then A equal to
(A) 30° (C ) 45°

13.The cofactor of the element 8 in the matrix
(A) 6 (C ) -2

14.The coefficient of x5 in the expansion of (x + 3 f is :
(A) 412(B) 1112
(C ) 1512(D) -202

15.The derivative of log Jx w.r.t x is :
(B) Diagonal matrix (D) Unit matrix
(B)15°
(D) 60°
123
987is:
456
(B)2
(D) -6
(A)
7T
(C ) 1/2
(B)1/2x
(D)1/x
2x
}_
x

16. The equation of the line parallel to the line 3x-4y + 2 = 0 and passing though the point (-2, 3) is:
(A) 3x + 4y-6 = 0 (C )3x-4y+ 18 = 0
x* -3"

17. If lim--------=108, the value of n is :
x-3
(A) 6
(C ) 2
(B) 3x + 4y = 18 (D) 3x -4y = 18
(B) 8 (D) 4

18. The area of the region bounded by the parabola y » x2 + 2.x -axis, x = 0 and x =3 : (A) 30(B) -15
(C ) -30(D) 15

19.If sin A =—,0* < A < 90*, the 4cos3 A-3cos A is equal to : 2
(A) 1
(B)0
(D) 1/2

20.The value of jxdx is :
(B)-2/3
(D)-3/2
-2/3
3
-3
2

21.A storey of house below ground level is called :
(A)Lower floor(B)Cellar
(C )Sub floor(D)Store

22.The zero of the graduated circle in a prismatic compass is located at the :
(A)North end(B)East end
(C )South end(D)West end

23.Hooking in steel reinforcement is always done :
(A)towards top(B)towards bottom
(C ) towards compression side(D) none of these

24.Combaincd correction for curvature and refraction is to be applied when :
(A)equalising BS and FS
(B)equalising RL
(C )bubble tube not in centre
(D)station point is more than 100 meters away from instrument

25.The bricks or stones which are laid perpendicular to face or direction of wall:
(A)is headers(B)is stretchers
(C )is frog(D)none of these

26.In a four stroke diesel engine, one cycle is completed in :
(A)180° of crank rotation(B)540° of crank rotation
(C )360° of crank rotation(D)720° of crank rotation

27.Which one is most suitable in differential mechanism?
(A)Compound gear train(B)Epicyclic gear train
(C )Reverted gear train(D)Constant mesh gear train

28.Compression ratio is the ratio of:
(A)Stroke volume to Clearance volume
(B)Clearance volume to Stroke volume
(C )Sum of Stroke volume and Clearance volume to Clearance volume
(D)Clearance volume to sum of Stroke volume and Clearance volume

29. Draft tube is used in :
(A) Hydroelectric power plant(B)Gas turbine power plantGas turbine power plant
(C ) Nuclear power plant(D)Diesel engine power plantDiesel engine power plant

30.Rear axle is placed in between :.
(A) Gear box and fly wheel(B)Differential and gear boxDifferential and gear box
(C ) Differential and wheel(D)Differential and propeller shaft

31.A 100 W Bulb, a 40W Fluorescent lamp and a 60W Fan in a room operates for an average duration of 5 hours in a day. What will be the total energy consumed during the month of April 2016?
(A) 3 kwh(B)30 kwh
(C ) 300 kwh(D)3000 kwh

32.An alternating current is represented byi = 141 sin 314 f. What is the rms value of this current?
(A) 314 A(B)141 A141 A
(C ) 100 A(D)70.5 A

33.Which one of the following bare copper residential installation?conductor is best suited for earthing in a small
(A) 4 SWG(B)6 SWG
(C ) 10 SWG(D)14 SWG

34.One kwh is equal to:.
(A) 860 kcal(B)800 kcal
(C ) 746 kcal(D)736 kcal

35.Resistance of a wire is 50 Ω. If the length of that wire what will be the new resistance?is doubled, keeping the volume same,
(A) 25 Ω(B)50Ω50 Cl
(C ) 100 Ω(D)200 Ω

36.The ripple frequency of the output wave form of bridgerectifier with a 60 Hz sine wave is :
(A) 100 Hz(B)120 Hz120 Hz
(C ) 30 Hz(D)60 Hz

37.In microcontrollers which registers are Used as pointers, to point the internal memory address :
(A) A and B registers(B)DPTR
(C ) R0and R: in bank zero(D)Program counterProgram counter and Stack pointer

38.What are the health hazards which can be caused byE waste, if it is not properly treated disposed off?
(A) Brain damage(B)Lung CancerLung Cancer
(C ) DNA damage(D)All of the aboveAll of the above

39.LEDs are made out of:
(A) Silicon(B)GermaniumGermanium
(C ) Gallium Arsenide(D)Silicon and Germanium

40.All CDMA based technologies 2G and 3G have —handovers.
(A) Soft handover(B)Hard handoverHard handover
(C ) Blind handover(D)Soft and Hard handoverSoft and Hard handover

41.Which of the following material is not used to make strain gauges?
(A) Nichrome(B)Pure platinumPure platinum
(C ) Bronze(D)Karma alloyKarma alloy

42.Which of the following is an inductance variable type transducer?
(A) LVDT(B)Load cellLoad cell
(C ) Thermistor(D)Carbon microphoneCarbon microphone

43.Thermocouple works on the principle of:
(A) See beck effect(B)Piezoelectric effectPiezoelectric effect
(C ) Photo-voltaic effect(D)Faraday effectFaraday effect

44.Which of the following is not a mode of operation of piezoelectric transducer?
(A) Transverse(B)LongitudinalLongitudinal
(C ) Shear(D)ElasticElastic

45.Change in the resistance caused by strain is ΔR, theresistance of the undeformed gauge Rg and e is the strain. Then the gauge factor is•
(A) M'**(B)e ΔR
€Rg
(C )(D)ΔRRc
ARRcE

46.A Remote Terminal Unit (RTU) in a telemetry system is used for:
(A)Providing power to the remote sensors
(B)Converting the output of the sensor to digital data and transmit to the base station
(C )Managing the health condition of the sensors
(D)Remote control the base station

47.The radio range of a telemetry system can be augmented by:
(A)Providing repeater(B) Increasing the antenna gain
(C ) Minimizing the transmission loss (D) All of the above

48.Which of the following statements is not applicable to land line telemetry system?
(A)Land line telemetry system is affected by EMI effects
(B)Land line telemetry system has limited frequency response
(C )Land line telemetry system is very effective for short distance transmission
(D)Distortions in transmission lines do not affect the performance of the telemetry system

49.A force balance current telemetering system
(i)Make use of a portion of the output current which is feedback to the input to oppose the motion of the input variable
(ii)Shows good linearity
(iii)Have better accuracy as smaller motions are required
(A)Only (i) is true(B)Only (iii) is true
(C )(i), (ii) and (iii) are true(D)None of the above are true

50.Which of the following is not a possible cause for optical fiber loss?
(A) Impurities(B) Attenuation in glass
(C )Stepped index operation(D)Micro-bending

51.Light traveling in an optical fiber follows which of the following principle?
(A)Huygens principle(B)Light theory
(C )Snells law(D)Fermat's principle

52.The term critical angle describes :
(A)The point at which light is refracted
(B)The point at which light becomes invisible
(C )The point at which light has gone from refractive mode to the reflective mode
(D)The point at which light has crossed the boundary layers from one index to another

53. Which of the following is not an instrument recommended by International Practical Temperature Scale (IPTS-90) for assigning values to seventeen phase equilibrium states of pure substances?
(A) Gas thermometer(B)Radiation pyrometerRadiation pyrometer
(C ) Platinum resistance thermometer(D)Quartz crystal thermometer

54.In electromagnetic radiation spectrum, the wavelength range for thermal radiation is :
(A) 0.01 pm to 100 pm(B)0.001 pm to 0.01 pm
(C ) 100 pm to 1000 pm(D)1000 pm to 2000 pm

55.Which of the following thermistors are suitable range?in measurement of temperature in cryogenic
(A) Zirconia based thermistors(B)Iron-Oxide based thermistors
(C ) Barium titanate based thermistor(D)Strontium titanate based thermistor

56.Which of the following is a typical range of liquid level measurement for a float type level measuring system?
(A) 10 cm -20 m(B)10 mm-10 cm10 mm - 10 cm
(C ) 0.1 cm - 1 m(D)0.1 mm - 1 cm

57.A simple pressure gauge is attached to the bottom of the tank. If P is the indicated pressure p is the density of the liquid and h is the liquid level. Then the relationship among these can
be expressed as:
(A) P = -P(B)p=h/pn
   g(D)p=p/h 

58.A pressure of 1 atmosphere is equal to :
(A) 76 cm of mercury of density 13.59 g/cm3
(B) 14.696 pounds per Sq.in absolute (C ) 1 Kg/cm2 (D) All of the above

59.A pressure of 1mm of Hg is equal to :
(A) 1333.22 /pbar(B)1.013 bars1.013 bars
(C ) 10 p bars(D)1000 pbars

60.Which of the following is not an elastic type pressure measurement system?
(A) Ring balance manometer(B)Bourdon tubeBourdon tube
(C ) Bellows(D)DiaphragmaDiaphragms

61.The ratio of the full scale flow to the minimum flow that can he measured within the stated accuracy of a flow measuring device is known as :
(A)Rangeability(B) Turn-down
(C ) Precision(D) Selectivity

62.A hot wire type flow meter is :
(A)Usable in very viscous fluids
(B)A low range instrument
(C ) Usable in steady as well as unsteady flow of liquid and gases
(D)Having better accuracy and independent of viscosity

63.The reciprocal of the viscosity is called:
(A)Relative viscosityRelative viscosity(B)Specific viscositySpecific viscosity
(C )FluidityFluidity(D)Kinematic viscosityKinematic viscosity

64.Psychrometer is used to measure :
(A)Humidity(B)SpeedSpeed
(C )TorqueTorque(D)AccelerationAcceleration

65.Given a plant which cannot be altered by the designer, the disturbance variable refers to a variable:
(A)That influences the plant and which can be manipulated
(B)That influences the plant hut cannot be manipulated,
(C ) That we wish to control
(D)That is measured by means of a sensor

66.The deviation of the transient period of control, which starts at the beginning of the control process and terminates when the controlled variable approximately reaches its prescribed value, will be refered to as :
(A)Rise time(B) Fall time
(C ) Settling time(D) Peak time

67.In proportional mode feedback control, increased loop gain :
(A)Improves the steady state accuracy (B)Increases disturbance signal rejection
(C )Improves relative stability(D)All of the above

68.Which of the following is TRUE for an OPAMP?
(A)Low input resistance(B)Very high output resistance
(C )Very high input resistance(D)Low open circuit voltage gain

69.if Rf is the resistance connected in the feedback path and Rl is a series resistance connected between inverting terminal and source of an OP AMP, then the voltage gain of the OPAMP inverting amplifier is :
(A)(B)
rf
(C )1-Rf/R1(D)1+Rf/R1

70.In a typical instrumentation amplifier that uses 3 OPAMPs :
(A)OPAMPs connected to the inputs are voltage followers and the OPAMP connected to the output is a differential amplifier
(B)OPAMPs connected to the inputs are inverting amplifiers and the OPAMP connected to the output is a summing amplifier
(C )OPAMPs connected to the inputs are voltage followers and the OPAMP connected to the output is a summing amplifier
(D)OPAMPs connected to the inputs arc non-inverting amplifiers and the OPAMP connected to the output is a summing amplifier

71.A device that automatically monitor and indicate whether the movement limits of a particular device have been exceeded is :
(A)Proximity switch(B)Safety switch
 C)Transfer switch(D)Limit switch

72.Which of the following actuators converts energy formed by vacuum or compressed air at high pressure into linear or rotatory motion :
(A)Hydraulic(B)Electric
(C )Pneumatic(D)Thermal

73.Which of the following is not a requirement for a cascade control system?
(A)The inner loop has influence over outer loop
(B)The inner loop is faster than the outer loop
(C )The inner loop disturbances are severe than the outer loop disturbances
(D)The inner loop is slower than the outer loop

74.The value of the learning* rate parameter in a Multi-Layer Feed Forward Neural Network
(MLFFNN) ranges between:
(A) 0-1(B) 0-10
(C ) 0.1-0.5 •(D) 1-100

75.A SCADA system performs :
(i)Data acquisition
(ii)Network data communication
(iii)Data presentation and control
(A)(i) and (iii)
(B)(iii)only(iii) only
(C )(i)and(ii)(i) and (ii)
(D)(i)(ii)and (iii)(i) (ii) and (iii)

76.Which of the following controller exhibit integral wind up when overdriven?
(A) Proportional controller(B) Integral mode feedback controller
(C ) Derivative mode feedback controller (D) All of the above

77.- The temperature at which the water vapor in a sample of air at constant barometric pressure condenses into liquid water at the same rate at which it evaporates is called :
(A) Freezing point(B) Dew point
(C ) Evaporation point(D) Melting point

78.Rack and pinion gear train is an example of:
(A)Rotatory-to-rotatory motion conversion
(B)Rotatory-to-translatory motion conversion
(C )Translatory-to- translatory motion conversion
(D)Translatory-to-rotatory motion conversion

79.Which of the following belt drives provide the best combination of traction, speed of movement, load of the bearings and long service life ?
(A) Round belts(B) Flat belts
(C ) Vbelts(D) Film belts

80.Which of the following is not an essential characteristics of robot?
(A)Sensing(B)Human friendly
(C )Movement(D)Intelligence

81.Which of the following is TRUE for a robot?
(i)All robots have some mechanical construction
(ii)All robots are autonomous
(iii)Robots have electrical components which power and control machinery
(iv)All robot contain some level of computer programming
(A)(i), (ii) and (iii)(B)(i), (iii) and (iv)
(C )(iii) and (iv)(D)All of the above

82.Linear system obeys:
(A) Super position theorem (C ) Thevenin’s theorem

83.For an LTI system, the convolution of the gives:
(A) Transfer function of the system (C ) The gain of the system

84.The damping ratio is strictly less than 1 for a system
(A) Under damped (C ) Critically damped
(B)Maximum power transfer theorem
(D)Norton’s theorem
input to the system with its impulse response
(B)The output of the system
(D)The frequency response of the system
i system. Then the system is :
(B)Over damped (D) Undamped

85.The Routh-Hurwitz criterion is a mathematical test that is necessary and sufficient condition for:
(A)Flat response of a LTI system(B)Stability of LTI system
(C )Consistency of a LTI system(D)Integrity of a LTI system

86.Which of the following is not a mode of operation of SCR?
(A)Forward blocking mode(B)Forward conduction mode
(C )Reverse blocking mode(I))Reverse conduction mode

87.The minimum current that must pass the circuit in order for the SCR to remain in the ON state is:
(A)Latching current(B)Reverse saturation current
(C )Holding current(D)Leakage current

88.A switching device that converts fixed DC input to a variable DC output voltage directly is :
(A)Chopper(B)Inverter
(C )Regulator(D)Stabilizer

89.A heart rate slower than 60 beats per minute is said to be :
(A)Tachycardiac(B)Bradycardiac
(C )Arrhythmia(D)Hypothermia

90.Delivering therapeutic dose of electrical energy to the heart with a device is called : 
(A) Tranquilizing(B) Defibrillation
(C )Angioplasty(D)Stent procedure

91. Which of the following is used to diagnose epilepsy and sleep disorders?
(A)ECG(B)EEG
(C )EMG(D)MRI

92.Which of the following is/are advantages of CT over traditional 2D medical radiography?
(A)Completely eliminates the superposition of images of structures outside the area of interest
(B)High contrast resolution
(C )Multi-planar reformatted images
(D)All of the above

93.The device or implants that are completely non-magnetic, non electrically conductive, non RF reactive are called :
(A)MR-safe(B)MR-conditional
(C )MR-unsafe(D)None the above

94.Ultrasound devices operates with frequencies in the range :
(A)20 KHz - several GHz(B)20 KHz - several MHz
(C )20 Hz-20 KHz(D)20 Hz-2000 Hz

95.Which of the following technique is used in chemistry to provide a fingerprint by which molecules can be identified?
(A) Infrared spectroscopy(B) Fourier transform spectroscopy
(C ) Raman spectroscopy(D) Czeny-turner monochromator

96.Which of the following relates the attenuation of light to the properties of the material through which the light is traveling?
(A)Snells law(B)Raman effect
(C )Beer’s law(D)Huygens-Fresnel equation

97.Solutions with a pH less than 7 are :
(A)Alkaline(B)Organic
(C )Neutral(D)Acidic

98.Lasers differ from other sources of light in such a way that the light emitted by laser is :
(A)Pure(B)Coherent
(C )Intense(D)Monochromatic

99.Frequency doubted diode pumped solid state lasers are 
(A) Bright red laser Pointers(B)Fiber lasers
(C ) Crystal lasers(D)
used to make :
Fiber lasers
Bright green laser pointers

100. Ruby used in ruby laser is made off: 
(A) Yttrium lithium fluoride (C ) Yttrium aluminium garnet
(B) Chromium doped corundum (D) Neon- Copper