GATE Graduate Aptitude Test in Engineering Previous Question Paper 2018 : gate.iitm.ac.in

Name of the Organisation : Indian Institute of Technology Madras
Name of the Exam : Graduate Aptitude Test in Engineering GATE – 2018
Document Type : Previous year Question papers
Year : 2018
Website : http://gate.iitm.ac.in/

IITM GATE Engineering Previous Question Paper

Question Paper of Graduate Aptitude Test in Engineering GATE – 2018 for all subjects Question Paper is now available in the official website of Indian Institute of Technology Madras

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Model Question Paper

Aerospace Engineering

Q.1. A jet aircraft is initially flying steady and level at its maximum endurance condition. For the aircraft to fly steady and level, but faster at the same altitude, the pilot should
(A) increase thrust alone.
(B) increase thrust and increase angle of attack.
(C) increase thrust and reduce angle of attack.
(D) reduce angle of attack alone.

Q.2 The pilot of a conventional airplane that is flying steady and level at some altitude, deflects the port side aileron up and the starboard aileron down. The aircraft will then
(A) pitch, nose up.
(B) roll with the starboard wing up.
(C) pitch, nose down.
(D) roll with the port wing up.

Q.3 A NACA 0012 airfoil has a trailing edge flap. The airfoil is operating at an angle of attack of 5 degrees with un-deflected flap. If the flap is now deflected by 5 degrees downwards, the CL versus a curve
(A) shifts right and slope increases.
(B) shifts left and slope increases.
(C) shifts left and slope stays the same.
(D) shifts right and slope stays the same.

Q.4 An airplane requires a longer ground roll to lift-off on hot summer days because
(A) the thrust is directly proportional to free-stream density.
(B) the thrust is directly proportional to weight of the aircraft.
(C) the lift-off distance is directly proportional to free-stream density.
(D) the runway friction is high on hot summer days.

Q.5 In an elliptic orbit around any planet, the location at which a spacecraft has the maximum angular velocity is
(A) apoapsis.
(B) periapsis.
(C) a point at +45o from periapsis.
(D) a point at 90o from apoapsis.

Agricultural Engineering

Q.1 F or accepting or rejecting a null hypothesis, which one of the following is NOT used as a significance test method in statistics?
(A) Z-test
(B) Student’s t-test
(C) Pearson’s correlation
(D) Relative standard deviation

Q.2 F or a two-wheel drive tractor, use of differential lock in adverse field condition ensures
(A) equal distribution of torque to both the drive wheels.
(B) equal distribution of power to both the drive wheels.
(C) distribution of higher amount of torque to the wheel under poor traction.
(D) distribution of higher amount of torque to the wheel under better traction

Q.3 D uring field evaluation of a combine harvester, total grain collected at the grain tank was 135 kg. Amount of threshed grain found over walker and shoe were 0.65 kg and 2.4 kg, respectively. Unthreshed grain lost with straw and chaff were 4.54 kg and 0.28 kg, respectively. Threshing efficiency of the combine harvester in percent is
(A) 94.37
(B) 94.49
(C) 96.50
(D) 96.63

Q.4 C onstituents of the producer gas contributing to its heating value are
(A) CO and CO2
(B) CH4 and CO2
(C) CO and H2
(D) CO2 and H2

Q.5 One of the key assumptions made by Dupuit-Forchheimer about the flow behavior in the porous medium towards subsurface drains is
(A) homogeneous medium
(B) isotropic medium
(C) horizontal streamlines
(D) uniform recharge

Architecture & Planning Engineering

Q.1 In a Colour Wheel, Red and Blue colours are
(A) Tertiary
(B) Complementary
(C) Secondary
(D) Primary

Q.2 In a bird’s eye perspective view of a cuboid, the maximum number of vanishing points is
(A) 1
(B) 2
(C) 3
(D) 6

Q.3 The compressive strength of M-25 concrete is
(A) 25 kg/sqm
(B) 25 N/sqmm
(C) 250 N/sqmm
(D) 2.5 N/sqmm

Q.4 In Critical Path Method (CPM) for time scheduling, ‘forward pass calculation’ is carried out for determining
(A) Late start and early finish time
(B) Early start and early finish time
(C) Late start and late finish time
(D) Early start and late finish time

Q.5 Collapse of the World Trade Center (WTC), New York, in 2001, was due to
(A) Wind load failure
(B) Foundation failure
(C) Thermal performance failure of reinforcement steel in RCC
(D) Thermal performance failure of structural steel

Instrumentation Engineering

Q.1 L et ?? be a 3 by 3 matrix with real number entries. The matrix ?? is such that ??2 = 0. The eigen values of N are
(A) 0, 0, 0
(B) 0,0,1
(C) 0,1,1
(D) 1,1,1

Q.2 C onsider a sequence of tossing of a fair coin where the outcomes of tosses are independent. The probability of getting the head for the third time in the fifth toss is
(A) 5/16
(B) 3/16
(C) 3/5
(D) 9/16

Q.3 T he Thevenin equivalent circuit representation across terminals p-q of the circuit shown in the figure is a
(A) 1 V source in series with 150 kO
(B) 1 V source in parallel with 100 kO
(C) 2 V source in series with 150 kO
(D) 2 V source in parallel with 200 kO

Q.4 A n ideal square wave with period of 20 ms shown in the figure, is passed through an ideal low pass filter with cut-off frequency 120 Hz. Which of the following is an accurate description of the output?
(A) Output is zero.
(B) Output consists of both 50 Hz and 100 Hz frequency components.
(C) Output is a pure sinusoid of frequency 50 Hz.
(D) Output is a square wave of fundamental frequency 50 Hz.

Q.5 I n the given circuit, assume that the opamp is ideal and the transistor has a ? of 20. The current Io (in ?A) flowing through the load ZL is ____.

Metallurgical Engineering

Q.1 I n froth flotation, the primary purpose of adding collectors is to:
(A) make the surface of the mineral hydrophobic.
(B) make the surface of the mineral hydrophilic.
(C) stabilize the froth.
(D) adjust the pH.

Q.2 A rrange the following in the correct sequence of operations in an integrated steel plant:
i. Basic Oxygen Furnace (BOF)
ii. Blast Furnace (BF)
iii. Ruhrstahl Heraeus Degassing Process (RH)
iv. Ladle Furnace Process (LF)
(A) BOF->BF->LF->RH
(B) BF->LF->BOF->RH
(C) RH->LF->BF->BOF
(D) BF->BOF->LF->RH

Q.3 C onsider the following engineering components:
P. Gas turbine blades
Q. Tungsten-based heavy alloy penetrators
R. Self-lubricating bearings
S. Engine block of an automobile
Which of the following two components are produced by powder metallurgy?
(A) P & Q
(B) Q & R
(C) Q & S
(D) P & S

Q.4 W hich of the following materials are protected by passivation (i.e., formation of a thin adherent film on the surface) from corrosion?
P. Aluminium alloys
Q. Mild steel
R. Stainless steel
S. Silver
(A) P & Q
(B) Q & R
(C) Q & S
(D) P & R

Q.5 A t equilibrium, the maximum number of phases in a three-component system at CONSTANT PRESSURE is:
(A) 1
(B) 2
(C) 3
(D) 4