hpsc.gov.in : HCS Preliminary Exam Mechanical Engineering Question Paper

Name of the Organization : Haryana Public Service Commission
Name of the Exam : HCS Preliminary Examination
Subject : Mechanical Engineering
Document Type : Previous Question Paper
Year : 2014

Website : http://hpsc.gov.in/en-us/
Download Sample/Model Question Paper : https://www.pdfquestion.in/uploads/11250-Mechanical.pdf

HCS Preliminary Exam Mechanical Engineering Question Paper :

Code : 13
Time Allowed : Two Hours
Marks: 100
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Related : HPSC HCS Preliminary Examination Mathematics Question Paper : www.pdfquestion.in/11246.html

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Q1. An iron ball and a cotton ball of same mass are thrown from a height h in air then
(A) the iron ball will reach the ground first
(B) the cotton ball will reach the ground fint
(C) both balls reach the ground at the same time
(D) None of these

Q2. Acceleration due to gravity is
(A) same at all places
(B) more at the equator of the earth than at the poles
(C) decreasing with altitude
(D) All are connect

Q3. A man moving in an accelerated train on horizontal tracks feels that his weight has/is
(A) decreased
(B) zero
(C) increased
(D) same

Q4 The number of independent equations available from static equations of equilibrium for plane problems are
(A) 3
(B) 6
(C) 12
(D) 9

Q5 According to the law of equilibrium, two forces are said to be in equilibrium only if they are
(A) equal in magnitude and opposite in direction
(B) opposite in direction
(C) col linear in action
(D) Both (A) and .(C)

Q6 A block slides down a smooth inclined plane at 300 in time from the top. If an identical block is released from the same point, falling freely to the ground, then it will reach in time
(A) t/2
(B) t/3
G) t/4
(D) t

Q7. A zero torque acting on a system results in conservation of
(A) angular momentum
(B) linear momentum
(C) energy
(D) angular velocity

Q8′ A railway train of 200m long passes over a bridge of 600m long. If the train is moving at 1Om/s, the time taken to cross the bridges
(A) 60s
(B) 90s
(C) 80s
(D) 100s

Q9. Two bodies of masses m1 and rn2 &re dropped from the same height. The ratio of their momentum at the ground is
(A) m1/m2
(C) m2/m1
(B) (m2/m1)1/2
(D) (m1/m2)1/2

Q10 A body of weight w is placed on an inclined plane. The angle made by the inclined plane with horizontal, when the body is on the point of moving down is called
(A) Angle of inclination
(B) Angle of Friction
(C) Angle of Repose
(D) Angle of limiting Fiction

11. The statement – ” if three forces acting at a point can be represented direction in magnifude and by the sides of a triangle taken in oid.r, ih” for “s a.e i; equilibrium,, _ is known as
(c) Law of triangle of forces
(D) Newton’s law of forces

12. If a body is moving in a straight line , the motion of the body is called
(A)Completely isolated from the system
(A) InCompletely isolated from the system
(C) completely attached to the system
(C) Incompletely attached to the system

Q13. Centroid of a body is its
(A) geometrical concentration
(C) weight concentration
(B) mass concentration
(D) density concentration