CROMPTON Technical Paper - Placement Questions

CROMPTON Technical Paper - Placement Questions

Q. The direction indicated by a Magnetic compass is

a) True North Pole
b) Alionic earth pole
c) Geographic North Pole
d) Magnetic north pole

Q. For a cantilever beam with uniformly varying load, shape of bending moment curve is

a) Parabolic
b) Hyperbolic
c) Straight line
d) cubic

Q. For perfectly elastic bodies, the value of coefficient of restitution is

a) 0
b) 0.5
c) 1
d) infinity

Q. Mechanical advantage for first order lever is

a) >1
b) <1
c) =1
d) none of the above

Q. Represent 18:4:1 in H.S.S

a) 18tu : 4vn : 1 cr.
b) 4vn:1cr:18tu
c) 1cr:4vn:18tu
d) 18tu: 1cr: 4vn

Q. At intense braking of an automobile, reaction of wheels on road

a) Will be equally dispersed to all 4 wheels.
b) Will be additional at the rear wheels
c) Inertia will be on the front wheels.

Q. if we apply brakes on the wheels of a bicycle then

a) normal reaction on the wheel decreases
b) normal reaction on the wheel increases
c) normal reaction remains the same as there is no radial component of frictional force

Q. Thermal efficiency of I.C engines is

a) 20-25%
b) 60-75%
c) 45- 55%.
d) 30-35%

Q. When a mass is supported by spring of spring constant k, which is cut in 4 equal pieces and then is connected in parallel, the equivalent spring constant is given by

a) k/4
b) 16k
c) k
d) 64k

Q. When a mass is supported on roof of an elevator and the elevator moves with an acceleration of 4.9 m/s2, it shows a spring reading of 15kg. Calculate the weight of the body.

a) 10
b) 30
c) 20
d) 15

Q. Mass production of bolts and rivets is given by

a) hot extrusion
b) forging
c) cold peening
d) cold heading

Q. Rivets are made by which process

a) extrusion
b) cold heating
c) forging

Q. Why doesn't mercury stick to glass tube

a) cohesive force>adhesive force
b) Cohesive forcec) cohesive force= adhesive force
d) None of the above

Q. How r the bolts and the nuts manufactured?

a) Head stamping
b) Cold extrusion
c) Old peening
d) forging

Q. Eulers formula is used for the column of length

a) >80
b) <90
c) >80
d) >110

Q. If a body weighing 40kg floats in water with 40% of volume immersed, the sp.gravity of the body will be

a) 1
b) 0.16
c) 0.25

Q. Axial claw clutches

a) engages
b) Disengages
c) Engages only with load
d) operates only with load

Q. If center distance of an involute mating gear changes then the pressure angle

a) Decreases
b) Increases
c) Remains unchanged

Q. Normalising is

a) heated above critical temperature and cooled in air.
b) heated above critical temperature and quenched in oil
c) heated below critical temperature and cooled in air

Q. The best suited material for permanent magnet is

a) Alnico
b) silicon

Q. Hooke’s joint is used for

a) parallel and intersecting shafts
b) Non parallel and non intersecting shafts
c) non parallel and intersecting shafts
d) Parallel and non intersecting shafts

Q. Which of the following is a loose running fit

a) h6f6
b) h6e6
c) h6d6

Q. Fahrenheit and centigrade are equal at

a) -40
b) 0
c) 32
d) 100

Q. M10 hexagonal bolt is manufactured by

a) upset forging and thread rolling
b) Casting and thread rolling

Q. Specific speed in a turbo machine depends upon

a) Geometric shape
b) Size
c) Head
d) all of the above

Q. Unit of surface roughness is given by

a) micron
b) PPM
c)
d) Meter

Q. What is mohr’s circle?

Q. Storage, transportation, operation, delay, inspection symbols are used in
a) process chart
b) mam m/c chart,
c) Grant chart
d) all of the above

Q. Melting point of ice changes with

a) increase in pressure
b) increase with pressure ratio

Q. If the speed of fan is doubled, quantity of air displaced is

a) Double the earlier displaced air
b) 4 times of the earlier displaced air
c) 1/2 times of the earlier displaced air
d) Remains the same

Q. Which one of the following has less carbon content

a) Tool steel
b) Spring steel
c) Carburizing steel
d) Forging steel

Q. When a helical compressive spring is subjected to an axial compression load, the stress induced in the spring will be

a) Shear
b) Tensile
c) Compressive
d) None

Q. For a bar element, if the area, length, and the stress are doubled, the elastic strain energy will be

a) Half
b) Doubled
c) 4 times
d) 8 times

Q. For a punching die, of 2mm thick sheet, diameter D and force f, calculate the Shear force.

Q. Spheroidising is a process of

a) case hardening
b) Normalizing
c) Tempering
d) Annealing

Q. What type of thread is used in lead screw of a lathe
a) Square
b) V
c) acme thread
d) buttress

Q. Wear allowance of a go/no go end plug gauge is given for

a) go end
b) no go end

Q. Internal spur gears can be made by using

a) Gear hobbing
b) Slotting
c) Gear shaping

Q. Height of the capillary

a) increase with increase in diameter of tube
b) increase with increase in specific weight
c) increase with decrease in diameter
d) increase with decrease in sp. Weight

Q. For a bolt of nominal diameter 33mm and the stress of 100N/mm2, the safe load obtained is

a) 160KN
b)60KN
c) 100KN

Q. A cylinder within the 1% of the tolerance capacity limit, what will be the permissible tolerance in height and radius.

Q. In ball bearings, the cage is used for

a) maintaining the ball position
b) maintaining parallelism between inner and outer race

Q. Pumped storage plants are used largely for

a) high head
b) run off river

Q. What is the Poisson’s ratio for an incompressible solid?

Q. If a spring of stiffness k is divided into 4 parts and then joined in parallel then what will be the resultant stiffness of the spring?

Q. Distance of ozone layer from surface of earth is in the range of

a) 0 to 100 km
b) 20 to 50 km
c) 50 to 100 km
d) 10 to 15 km

Q. An elevator is moving up with an acceleration of 4.9 m/sec2 and a body weighing 15 kg is attached with a spring balance. What will be the value in the spring balance?

a) 15
b) 10
c) 30
d) 20

Q. Power of a belt is given by

a) mass
b) velocity
c) arc
d) all the above

Q. In the state of same heat input and max pressure

a) Efficiency of Otto cycle is more than diesel
b) efficiency of dual cycle is more than diesel
c) efficiency of diesel cycle is more than Otto

Q. Bending stress is (y is the distance from the neutral axis)

a) inversely proportional to y
b) Directly proportional to y
c) totally independent of y

Q. If a body is 30% immersed in water what will be its specific gravity?

Q. The temperature at the three edges of a square shaped body is 0® C and that on the fourth edge is 100®C, find the temperature at the centre of the square.
a) 25
b) 100
c) 50
d) 0

Q. True or false

i) Plaster of Paris is made from bauxite, dolomite and limestone.
ii) Highest temperature of a body is represented by red color.
iii) In the ball bearing, grease lubrication acts as a boundary layer lubrication.

Q. What is a turbo charger?

Q. Design a silencer and explain its purpose.

Q. What is the mathematical formula for moment of inertia?

Q. What are the Laws of thermodynamics?

Q. Explain Carnot cycle.

Q. What are tqm, tpm, jit and 5s principle?

Q. Define force and explain its significance.

Q. Define and explain Charles law and boyle’s law.

Q. Why do we use coolant in a machine?

Q. Explain Iron carbon equilibrium diagram.

Q. Design a fan. What is the direction of rotation of a ceiling fan and why does it always rotate in an anticlockwise direction? What will happen if we change direction of rotation?

Q. How is it possible to increase the pressure angle of a gear?

Q. What do you understand by 18-4-1 mild steel?

Q. What is the unit of Surface measurement?

Q. In which of the fit, clearance will be more for a hole and a shaft?

a) h6g8
b) h6e8
c) h9f9
d) h9d8

Q. What is the thermal efficiency of internal combustion engine?

Q. Mass production of internal spur gear is done by which process?