JWM Mechanical Engineering Exam Paper 2010

JWM Ordnance Factory Exam 2010 Paper for Mechanical Engineering

Junior Works Manager Exam 2010 paper

 

Q.No. 1 – Match List I with List II and select the correct answer using the code given below –

List I List II
A. Pendulum Type Governor 1. Pickering governor
B. Deadweight governor 2. Rites governor
C. Spring Controlled governor 3. Proell governor
D. Intertia governor 4. Watt governor

Code:

(a) A-4, B-3, C-1, D-2                                                (b) A-2, B-3, C-1, D-4

(c) A-4, B-1, C-3, D-2                                    (d) A-2, B-1, C-3, D-4

Q.No. 2 – Consider the following statements :

Effect of unbalanced primary force along the line of stroke produces

(1) Swaying couple

(2) Variations in tractive force

(3) Hammer below

Which of these statements are correct?

(a) 1, 2 & 3          (b) 1 & 2 only     (c) 2 & 3 only     (d) 1 & 3 only

Q.No.3 – A cannonball is fired from a tower 80 m above the ground with a horizontal velocity of 100m/s. Determine the horizontal distance at which the ball will hit the ground. (Take g=10m/sec.sq.)

(a) 400 m             (b) 280 m               (c) 200 m              (d) 100 m

Q.No.4 – Match List I with List II and select the correct answer using the code given below the lists

List I List II
A. Von-Mises yield criterion 1. Fatigue design
B. Soderberg’s Law 2. Failure in machine elements made of ductile materials
C. Sommerfield number 3. Design of journal bearings
D. Buckingham equation 4. Dynamic tooth load in gears in mesh

Code :-

(a) A-4, B-1, C-3, D-2                                           (b) A-2, B-1, C-3, D-4

(c) A-4, B-3, C-1, D-2                                           (d) A-2, B- 3, C-1, D-4

Q,No.5 – Consider the following statements:

Shear force in beams is caused by

(1) Lateral forces acting on the beam

(2) Variation of bending moment along beam length

(3) A couple acting on the beam

Which of the above statements is/are correct?

(a) 1 only              (b) 1 & 2 Only             (c) 2 & 3 only             (4) 1 & 3 only

Q.No. 6 – A car travels on a horizontal track of radius 9 m, starting from rest at a constant tangential acceleration of 3 m/sec.sq.. What is the resultant acceleration of the car, 2 sec. after starting?

(a) 3 m/sec.sq.                 (b) 4m/sec.sq.         (c) 5m/sec.sq.          (d) 7m/sec.sq.

Q.No. 7-  Match List I with List II and select the correct answer using the code given below the lists

List I List II
A. Double-helical gears connecting parallel shafts 1. Rack and pinion
B. Two non-parallel or intersecting but coplanar shafts 2. Spiral gear
C. Two non-intersecting and non-parallel shafts connected by gears 3. Bevel gear
D. Gear of a shaft meshing externally with a straight toothed member 4. Herringbone gear

Code :-

(a) A-1, B-2, C-3, D-4                                           (b) A-4, B-2, C-3, D-1

(c) A-1, B-3, C-2, D-4                                           (d) A-4, B- 3, C-2, D-1

Q.No. 8 – Consider the following statements :

If a beam is to bend without being twisted.

(1) Plane of a load must contain one of the axes of symmetry of the beam

(2) The beam cross-section must have at least an axis of symmetry

Which of the above statements is/are correct?

(a) 1 only             (b) 2 only       (c) both 1 & 2         (d) Neither 1 nor 2

Q.No.9 – Water drops from a tap at the rate of four droplets per second. Determine the vertical separation between two consecutive drops after the lower drop attained a velocity of 4 m/s. (Take g=10 m/sec.sq.)

(a) 0.49 m           (b) 0.31 m                 (c) 0.50 m            (d) 0.30 m

Q.No.10- Match List I with List II and select the correct answer using the code given below the lists

List I List II
A. Degree of reaction 1. Power given by water to runner
B. Net head 2. Inverse of √H, where H is head on turbine
C. Flow ratio 3. Change of total energy, inside the runner
D. Hydraulic efficiency 4. Friction between water and penstock

Code :-

(a) A-3, B-2, C-4, D-1                                           (b) A-1, B-2, C-4, D-3

(c) A-3, B-4, C-2, D-1                                           (d) A-1, B- 4, C-2, D-3

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