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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