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ISRO Previous Year Papers, (CSE/ECE/Mechanical) Scientist/Engineer Paper

ISRO Previous Papers

Let’s Look on ISRO Previous Papers ….!!! Candidates who are going to appear in ISRO Recruitment Exam for the Post of Scientist/Engineer SC – Electronics, Mechanical, Computer Science, Civil, Electrical & refrigeration & AC they must prepare with ISRO Previous Year Model to achieve great marks. Every year Indian Space Research Organization organizes various exams to select result oriented and skilled contenders for various posts. Candidates can download the sample papers in the form of PDF through online mode. You can get the ISRO Question Papers from the below section of this page.

Applicants can check ISRO Sample Question Papers which asked in the previous years and get a preplan of techniques to solve them by practicing with these questions. Candidates can check the solved question and answers for the papers from here. To get rest information, please scroll down this page which is created by the team of recruitmentresult.com

ISRO Questions & Answers

Ques:1 Which of the following are the ingredients of gun metal?

a ) Iron, Zinc, Titanium

b) Iron, tin

c) Iron, Brass, Tin

d) Copper, Tin

Ans: (d)

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Ques:2 What is laughing gas?

a) Nitrous Oxide

b) Carbon monoxide

c) Sulphur dioxide

d) Hydrogen peroxide

Ans: (a)

Ques:3 The high gain codes are

a) Turbo codes

b) BCH codes

c) R-S codes

d) None of the above

Ans: (a)

Ques:4 Which of the following is used as a moderator in nuclear reactor?

a) Thorium

b)  Graphite

c) Radium

d) Ordinary water

Ans: (b)

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Ques:5 With respect to I.C. engine emission, consider the following statements :

1.   Evaporative emissions have no carbon monoxide and oxides of nitrogen

2. Blow by emission are essentially carbon monoxide and suspended particulate matter

3. Exhaust emissions contain 100% of carbon monoxide , 100 % of oxides of nitrogen and around 50-55% of hydrocarbons emitted by the engine.

4. There are no suspended particulates in the exhaust.

Of these statements

(a) 1 and 4 are correct

(b) 1 and 3 are correct

(c) 2 and 3 are correct

(d) 1,2,3 and 4 are correct

Ans: (c)

Ques:6 Time constant of a series R-L circuit is given by

a) LR

b) L/R

c) L2R

d) LR2

Ans: (b)

Ques:7 In a new temperature scale say op, the boiling and freezing points of water at one atmosphere are 100op and 300op respectively. Correlate this scale with the Centigrade scale. The reading of 0o p on the Centigrade scale is

(a) 0oC

(b) 50oC

(c) 100oC

(d) 150oC

Ans: (d)

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Ques:8 In an atomic explosion, enormous energy is released which is due to

(a) conversion of chemical energy into heat energy

(b) conversion of mechanical energy into nuclear energy

(c) conversion of mass into energy

(d) conversion of neutrons into protons

Ans: (c)

Ques:9 Consider a set of n tasks with known runtimes r1,  r2 ………  rn, to be run on a uniprocessor machine.  Which of the following processor scheduling algorithms will result in the ma throughput ?

(a) Round Robin

(b) Shortest job first

(c) Highest response ratio next

(d) first cum first served

Ans: (b)

Ques:10 The working temperature in the evaporator and condenser coils of a refrigerator are -30oC and 32oC respectively. If the actual refrigerator has a C.O.P of 0.75 of the maximum. the required power input for a refrigerating effect of 5 kW is, nearly,

(a) 1.7 kW

(b) 2.94 kW

(c) 3.92 kW

(d) 4.0 kW

Ans: (a)

Ques:11 The forbidden energy gap for silicon is

a) 0.12 eV

b) 1.12 eV

c) 0.72 eV

d) 0.92 eV

Ans: (c)

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Ques:12 Number of h parameters of a transistors are

a) 1

b) 2

c) 3

d) 4

Ans: (d)

Ques:13 In an atomic nucleus, neutrons and protons are held together by

a) gravitational forces

b) exchange forces

c) coulombic forces

d) magnetic forces

Ans: (b)

Ques:14 For an-conditioned space, RTH = 100 kW; RSHF = 0.75, volume flow rate is equal to 100 m3/minute and indoor design specific humidity is 0.01 kg/(kg of dry air). The specific humidity of supply air is

(a) 0.010

(b) 0.0075

(c) 0.005

(d) 0.0025

Ans: (c)

Ques:15 The critical value of Reynolds number for transition from laminar to turbulent boundary layer in external flows is taken as

(a) 2300

(b) 4000

(c) 5 x 105

(d) 3 X 106

Ans: (a)

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Ques:16 Decibel is the unit for

a) speed of light

b) radio wave frequency

c) intensity of sound

d) intensity of heat

Ans: (c)

Ques:17 Demodulation

a) is performed at the transmitting station

b) removes side bands

c) rectifies modulated signal

d) is opposite of modulation

Ans: (d)

Ques:18 The five items :  A, B, C, D,  and E are pushed in a stack, one after the other starting from A.  The stack is popped four times and each element is inserted in a queue. Then two elements are deleted from the queue and pushed back on the stack. Now one item is popped from the stack.  The popped item is

(a) A

(b) B

(c) C

(d) D

Ans: (d)

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Ques:19 In the operation of four-stroke diesel engines, the term ‘squish’ refers to the

(a) injection of fuel ! in the precombustion chamber

(b) discharge of gases from the precombustion chamber

(c) entry of air into the combustion chamber

(d) stripping of fuel from the core

Ans: (a)

Ques:20 Which of the following modulating system is digital ?

a) PPM

b) PWM

c) PCM

d) PEM

Ans: (c)

ISRO Previous Papers

Download ISRO Previous Year Question Papers PDF Files

Scientist / Engineer ‘SC’ Computer Science2017
2016
2015
2014
2013
2011
2009
2008
2007
Scientist / Engineer ‘SC’ Electronics2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
Scientist / Engineer ‘SC’ Mechanical2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
Admin Officer2011
2008
2007
Accounts Officer2011
2008
2007
Junior Personal Assistant2012
2010 Paper-I
2010 Paper-II
2008 Paper-I
2008 Paper-II
2006 Paper-I
2006 Paper-II
Heavy Vehicle Driver and Staff Car Driver2015
Assistant and Upper Division Clerk2015
2014
2012
2010 Paper-II
2010 Paper-I
2008 Paper-II
2008 Paper-I

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2 Responses to "ISRO Previous Year Papers, (CSE/ECE/Mechanical) Scientist/Engineer Paper"

  1. Arya Mohan.S.

    helpful one

  2. sariz

    will u pls provide previous year question papers for assistant exam?.

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