JUNIOR INSTRUCTOR ONLINE EXAM DATE:22-03-2017

JUNIOR INSTRUCTOR (MECHANIC MEDICAL ELECTRONICS)

ONLINE EXAM DATE:22-03-2017
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1.Gulmarg is a hill station in

A.Himachal Pradesh

B.Maharashtra

C.Jammu and Kashmir

D.Tamil Nadu

Ans:C

2.In India,which coast receives rain fall from North Eastern Monsoon?

A.Konkan coast

B.Coromandal coast

C.Malabar coast

D.Gujarat coast

Ans:B

3.Who is the Deputy Chairman of NITI Aayog?

A.Aravind Pangaria

B.C.Ranga Rajan

C.Urjith patel

D.None of the above

Ans:A

4.Pradhan Mantri Suraksha Bima Yojana started on

A.28^th August 2014

B.22^nd January 2015

C.22^nd September 2014

D.15^th July 2015

Ans:D

5.How many censuses(including the 20 census)have been carried out since Independence?

A.07

B.05

C.06

D.08

Ans:A

6.Al-Hilal was a newspaper started for propagating nationalism by

A.Mohammed Ali

B.Abul Kalam Azad

C.Sayed Ahammed Khan

D.Mahatma Gandhi

Ans:B

7.Who was the British Prime Minister at the time of the Second Round Table Conference?

A.Clement Atlee

B.Neville Chamberlain

C.Ramsay MacDonald

D.None of the above

Ans:C

8.Kaladi the birth place of Sankaracharya stands on the banks of the river

A.Pamba

B.Bharatapuzha

C.Chaliyar

D.Periyar

Ans:D

9.Kerala Pazhma,a pioneering Malayalam works on Kerala history written by

A.J.Hough

B.K.V.Krishna Ayyar

C.Dr.Jerman Gundert

D.Fr.Ferroli

Ans:B

10.Who developed Cochin Harbour into a major port?

A.Cabral

B.Lord Macaulay

C.Robert Bristow

D.Marthanda Varma

Ans:C

11.Which social reformer was nominated by Travancore Government as a member of Sri Mulam Praja Sabha?

A.Sahodaran Ayyappan

B.Dr.Palpu

C.Sri Narayana Guru

D.Ayyankali

Ans:D

12.The teaching of one of the following social reformer,helped to strengthen the base of national movement in North Malabar

A.Swami Vagbhatananda

B.Vaikunda Swamikal

C.Chattampi Swamikal

D.Sri Narayana Guru

Ans:A

13.Poikayil Yohannan is associated with the organization of

A.Sadhujana Paripalana Yogam

B.Prathyaksha Raksha Daiva Sabha

C.Atmavidhya Sangam

D.Arya Samajam

Ans:B

14.jati Mimamsa(Critique of Caste)is written by

A.Chattampi Swamikal

B.Pandit Karuppan

C.Sri Naryana Guru

D.Vaikunda Swamikal

Ans:C

15. Which social reformer is known as ‘Vidyadhiraja’?

A.K.Kelappan

B.Pandit Karuppan

C.Ayyankali

D.Chattampi Swamikal

Ans:D

16.In which year,Fedel Castro officially steps down as President of Cuba?

A.2008

B.2006

C.2015

D.1976

Ans:A

17.Who is the director of the popular film’Pulimurugan’?

A.Tomichan Mulakumpadam

B.Vysakh

C.Nadir Shah

D.Mohanlal

Ans:B

18.Who hit the fastest Ranji Trophy Century at Thiruvanathapuram?

A.Vijay Hansare

B.Gughale

C.Rishab Pant

D.Ankit Bhavan

Ans:C

19.Who is the minister in charge of Portfolio of Kerala State Dairy Development Department?

A.V.S.Sunilkumar

B.P.Thilothaman

C.T.P.Rama Krishnan

D.K.Raju

Ans:D

20.Britain’s Andy Murray won the ATP World Tour Number One trophy after defeating

A.Novak Djokovic

B.Stan Wawrinka

C.David Goffin

D.Kei Nishi Kori

Ans:A

21.The mode of propagation of FM signal is by

A.Sky wave

B.Ground wave

C.Direct wave

D.Reflected wave

Ans:C

22.Adding a weak cell in series with a battery causes

A.Decrease in Current

B.Increase in Current

C.Decrease in Voltage

D.No Change in Voltage and Current

Ans:C

23.The ratio of ON time of a Pulse to the OFF time is known as

A.Pulse Repetition Frequency

B.Duty Cycle

C.Time Cycle

D.ON Cycle

Ans:B

24.The Time Period of an A stable Multivibration is given by the expression

A.T=RC

B.T=0.707 RC

C.T=0.69 RC

D.T=1.38 RC

Ans:C

25.Wien Bridge Oscillator Circuit uses

A.Negative Feed back

B.Positive Feed back

C.Both Negative and Positive Feed back

D.None of the above

Ans:C

26.The Amplitude of undammed Oscillation

A.Decreases with time

B.Increases with time

C.Constant

D.Zero

Ans:C

27.The impedance of the parallel RLC circuit at Resonance is

A.Maximum

B.Minimum

C.Zero

D.Equal to DC resistance of the coil

Ans:A

28.A series resonance circuit used to reject an undesired frequence is known as

A.Wave guide

B.Wave trap

C.Band pass filter

D.Band stop filter

Ans:B

29.Which filters are used to block the 50 Hz hum produced by AC mains in Amplifiers?

A.Low Pass

B.High Pass

C.Band Pass

D.Band Stop

Ans:A

30.Voltage follower circuits are used for

A.Current amplification

B.Voltage amplification

C.To avoid loading effect of source

D.All the above

Ans:C

31.Which of the following is difficult to fabricate in an IC?

A.Diode

B.Resistor

C.Transistor

D.Choke

Ans:D

32.The output iimpedance of an Op-Amp is about

A.1 MU

B.10 KU

C.500 U

D.50 U

Ans:D

33.In Class B amplifier the Q point is Set Slightly above cut off.The purpose is to

A.Avoid Cross over distortion

B.Increase efficiency

C.Reduce power dissipation

D.Increase gain
Ans:A

34.Velocity of sound in water/liquid compared to that of air is

A.Less

B.Either Less or More

C.The Same

D.More

Ans:D

35.Specific Gravity of a fully  charged Lead-Acid cell at room temperature will be

A.1.15

B.1.38

C.1.835

D.1.28

Ans:D

36.For IC 7815 the minimum unregulated DC input voltage should be

A.+15 V

B.+17 V

C.+19 V

D.+13 V

Ans:B

37.Two identical transistors having a of 50 each,are connected as Darlington pair,the current gaina of the amplifier is

A.100

B.1

C.2500

D.500

Ans:C

38.Effect of the emitter by pass capacitor in a CE Amplifier is

A.Gain

B.Input impedance

C.Output impedance

D.Both 1 and 2

Ans:D

39.Which of the following is the most preferred type of biasing?

A.Emitter bias

B.Voltage divider bias

C.Base bias

D.Both 1 and 3

Ans:B

40.A good power supply should have load regulation not more than

A.0.10%

B.1%

C.5%

D.10%

Ans:A

41.The phenomenon which causes reverse breakdown in Zener Diode is known as

A.Hall effect

B.Break down effect

C.Avalanche effect

D.Induction effect

Ans:C

42.The RMS voltage at the transformer secondary is 6 V.Its Peak Value is:

A.9.6V

B.7.2V

C.8.5 V

D.12 V

Ans:C

43.When a diode is tested using an Ohm meter,it indicates high resistance in both direction,the condition of the diode is

A.Open

B.Short

C.Leaky

D.Good

Ans:A

44.Which of the following is a polarized capacitor?

A.Paper Capacitor

B.Plastic film Capacitor

C.Ceramic Capacitor

D.Tandalum Electrolytic Capacitor

Ans:D

45.If ‘m’and ‘n’are the modulus of any counters,then overall modulus of the cascaded counters is given by

A.’mn’

B.’2^(mn)’

C.’mn^2’

D.’(m/n)^2’

Ans:A

46.IC 7476 is

A.D Flip Flop

B.RS Flip Flop

C.JK FlipFlop

D.MS FlipFlop

Ans:C

47.The output of a particular OP-Amp increases 8 V in 12 ms,the slew rate is

A.90 V/ms

B.1 V/ms

C.1.5 V/ms

D.0.67 V/ms

Ans:D

48.A Binary number 10101 is equivalent to decimal number

A.19

B.12

C.27

D.21

Ans:D

49.The number’(12)-8’is equivalent to decimal

A.12

B.20

C.10

D.4

Ans:C

50.The expression ‘bar{(ABC)}’can be simplified as

A.’barA.barB.barC’

B.’AB+BC+CA’

C.’AB+barC’

D.’barA+barB+barC’

Ans:D

51.CMOS circuits are extensively used for One chip computers mainly because of their

A.Low power dissipation

B.Low cost

C.High noise immunity

D.Large packing density

Ans:D

52.The principal disadvantage of a Piezo electric transducer is that it

A.Can measure only force

B.Cannot measure static conditions

C.Is too small to handle

D.Produces only DC voltage

Ans:B

53.Loading effect is principally caused by -------------instruments

A.High resistance

B.Low sensitivity

C.High sensitivity

D.High range

Ans:B

54.Total internal reflection can take place when light travels from

A.Air to glass

B.Glass to air

C.Rarer to a denser medium

D.Denser to a rarer medium

Ans:D

55.The structure of an optical fibre consist of

A.Multimode step index

B.Graded index

C.Single mode step index

D.All of the above

Ans:D

56.Noise margin is expressed in

A.Decibel

B.Watt

C.Volt

D.Phon

Ans:C

57.An X-OR gate produces an output only when its two inputs are

A.High

B.Low

C.Different

D.Same

Ans:C

58.In a JFET,’”I-{DSS}”’is known as

A.Drain to source current with gate shorted

B.Drain to source current with gate shorted

C.Drain to source current with gate open

D.None of the above

Ans:B

59.Which of the following devices has the highest input impedance?

A.JFET

B.Ordinary transistor

C.Crystal diode

D.MOSFET

Ans:D

60.An SCR is turned off when

A.Anode current is reduced to zero

B.Gate voltage is reduced to zero

C.Gate is reverse biased

D.None of the above

Ans:A

61.A diac is-------switch

A.AC
B.DC

C.Mechanical

D.None of the above

Ans:

62.A UJT may be used as

A.Amplifier

B.Saw tooth generator

C.Rectifier

D.None of the above

Ans:B

63.The horizontal plates of a CRO are supplied with-------------to observe the waveform of a signal

A.Sinusoidal wave

B.Cosine wave

C.Sawtooth wave

D.None of the above

Ans:C

64.The modulus of a counter is

A.The number of flipflops

B.The actual number of states in its sequence

C.The number of times it recycles in a sec

D.The maximum no of states

Ans:B

65.The digital circuit that routes its single input signal to one of ‘2^n’output lines depending on the value of ‘n’control lines is

A.Multiplexer

B.Demultiplexer

C.Encoder

D.Data selector

Ans:A

66.A full adder can be made up of

A.Two half adders

B.Two half adders and a NOT gate

C.Two half adders and a OR gate

D.Two half adders and a AND gate

Ans:C

67.Which of the following is called the Universal Bias?

A.Emitter bias

B.Voltage divider bias

C.Base bias

D.None of the above

Ans:B

68.The advantage of transistor over Vacuum tube is

A.Very small size

B.Minimum power loss in the form of heal

C.Low operating voltage

D.All of the above

Ans:D

69.Which of the following should be as high as possible?

A.Signal to noise ratio

B.Hystersis

C.Range

D.Frequency response

Ans:A

70.The degree to which variation in the output of an instrument follow input variations is referred to as

A.Sensitivity

B.Linerity

C.Hysteresis

D.Accuracy

Ans:B

71.The 8051 microcontroller is of------pin,package a----------processor

A.30,1 byte

B.20,1 byte

C.40,8 bit

D.40,8 byte

Ans:C

72.In Induction heating depth of penetration is proportional to

A.’”Sqrt{frequency}”’

B.’1/”sqrt{frequency}”’

C.frequency

D.’”(frequency)^2”’

Ans:B

73.The ON state voltage drop across IGBT is

A.Less than that across MOSFET

B.Greater than that across MOSFET

C.Equal to that of MOSFET

D.None of the above

Ans:A

74.Which BUS is bi-directional?

A.Data bus

B.Control bus

C.Address bus

D.Multiplexed bus

Ans:A

75.The composition of soft solder is

A.Lead 37%-Tin 63%

B.Lead 50%-Tin 50%

C.Lead 63%-Tin 37%

D.Lead 70%-Tin 30%

Ans:A

76.Which digital IC package type makes the most efficient use of printed circuit board space?

A.SMT

B.TO can

C.Flat-pack

D.DIP

Ans:A

77.Which of the following can be act as Shear Protectorand

A.Serum

B.Silicon oil

C.Glucose

D.Glutamic acid

Ans:A

78.Non linear relationship between shear stress and shear rate exist in

A.Newtonian fluids

B.Non Newtonian fluids

C.Both(1)and (2)

D.None of these

Ans:B

79.The mechanical means of accomplishing sterilization of fermentation media/equipment is

A.Ultrasonic

B.Radiation

C.Chemical agents

D.None of these

Ans:A

80.The collection efficiency by diffusion increases with

A.Decreasing particle size

B.Decreasing air velocity

C.Both 1 and 2

D.Increasing particle size

Ans:C

81.MRIC machines are calibrated in --------units

A.Power

B.Tesla

C.Pressure

D.Hertz

Ans:B

82.Phonocardiograph is used for recording the sounds connected to which of the following

A.Pumping action of heart

B.Movement of valves

C.Pulsation in blood vessels

D.None of these

Ans:A

83.The circuit which controls the Turn ON and Turn OFF and length of X-Ray delivered it to the patient is

A.Filament circuit

B.HT-circuit

C.Timing circuit

D.None of these

Ans:C

84.In dialysis the waste products are transferred to the dialysate by

A.Viscosity variation

B.Diffusion

C.Surface tension

D.Centrifuge

Ans:B

85.Among the following imaging system which has noninvasive character

A.CT imaging system

B.PET system

C.Nuclear imaging system

D.Ultrasonic imaging system

Ans:D

86.The most modern difibrilators will have position for synchronizing discharge pulse with the patient’s

A.EEG

B.ECG

C.EMG

D.None of these

Ans:B

87.Cardiac catheterization is a technique used primarily to diagnose

A.Nerve deficiencies

B.Valve deficiencies

C.Lung deficiencies

D.None of these

Ans:B

88.X-Ray images are

A.Unidimensional

B.Multidimensional

C.Two dimensional

D.Three dimensional

Ans:C

89.In Audiometer which channel has pure tone or speech output

A.First

B.Second

C.Third

D.Fourth

Ans:A

90.In Bio-Telemetry the FDM stands for

A.Frequencey division modulation

B.Fesimile distance modulation

C.Fourier domain modulation

D.Frequency division multiplexing

Ans:D

91.An Endoscope is an Instrument for examining

A.The Cancer Cells

B.Blood Flow Rates

C.The Head Surfaces

D.A Body Cavity

Ans:D

92.The ability of the trace to remain visible on the face of CRT is known as

A.Appearance

B.Persistence

C.Resolution

D.Precision

Ans:B

93.The implanted receiver has been used with patient for stimulating

A.Nerves

B.Bones

C.Muscles

D.Tracts

Ans:A

94.A---------is used to discharge the defibrillator when the paddles are properly positioned

A.Thumb switch

B.Foot switch

C.Paddle switch

D.Charge switch

Ans:A

95.IN ERG measurements the reference electrode is made from

A.Carbon

B.Silver

C.Carbon chloride

D.Silver chloride

Ans:D

96.The advantage of star connected supply system is that

A.Line current is equal to phase current

B.Two voltages can be used

C.Phase sequence can be easily changed

D.It is a simple arrangement

Ans:B

97.Internet works on

A.Packet switching

B.Circuit switching

C.Both(1)and (2)

D.None

Ans:C

98.A circuit breaker is a

A.Power factor correcting device

B.Wave form correcting device

C.Both 1 and 2

D.Current interrupting device

Ans:D

99.For communication from one network to another---device is used

A.Gate way

B.Utility server

C.Printer server

D.Filer server

Ans:D

100.Coaxial cable consists of----------------concentric copper conductors

A.1

B.2

C.3

D.4

Ans:B