Vikram Sarabhai Space Centre Draughtsman Mechanical Paper 2019
How much force must be applied by a person to lift an object weighing 500 kg.f using a pulley block that gives him a mechanical advantage of 10?
(a) 10 kg.f
(b) 20 kg.f
(c) 50 kg.f
(d) 5000 kg.f
Module of a gear is 4 and its pitch circle diameter is 240 mm. Calculate the number of teeth in the gear
(a) 60
(b) 40
(c) 120
(d) 960
A bullet of mass 10 gm travels horizontally with a velocity of 400 m/s. The kinetic energy of the bullet is
(a) 400 Joules
(b) 200 Joules
(c) 4000 Joules
(d) 800 Joules
An object of weight 30 kg.f is resting on a table. What is the minimum horizontal force needed to start it’s sliding, if the co-efficient of sliding friction is 0.15?
(a) 1.5 kg.f
(b) 30.0 kg.f
(c) 4.5 kg.f
(d) 6.0 kg.f
An empty drum of mass 50 kg is resting on a shop floor. Find the co-efficient of rolling friction if a force of 100N makes it just move. (Assume g= 10 meter per second square)
(a) 0.1
(b) 0.2
(c) 0.25
(d) 0.15
Which of the following is used to measure temperature?
(a) Thermocouple
(b) Thermometer
(c) Pyrometer
(d) All of the above
A body of mass 10 kg strikes a wall with a momentum of 1000 kg.m/sec. The velocity with which it strikes the wall is
(a) 10 m/s
(b) 20 m/s
(c) 100 m/s
(d) 1000 m/s
A mortise gauge is a
(a) STriking tool
(b) Planeing tool
(c) Boring tool
(d) Marking tool
In spot welding, recommended minimum distance between the nearest edge of the plate and centre of spot weld of diameter ‘d’ should be equal to
(a) d
(b) 1.5 d
(c) 2d
(d) 3d
As per Indian standard specifications, 100 H6g5 means that
(a) basic size is 100 mm
(b) actual size is 100 mm
(c) difference between basic and actual size is 100 mm
(d) None of these
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