ONLINE QUIZ COMPETITION
ON MECHANICAL ENGINEERING

Which one of the following is the unit of mass density? 

a) kg/m3

b) kg/m2

c) kg.m

d) kg/ms

Answer:  a) kg/m3

 

The specific gravity of a liquid has 

the same unit as that of mass density

the same unit as that of weight density

the same unit as that of specific volume

NO unit

Answer:  NO unit

 

Centrifugal pump is a_________ 

Turbomachinery

Flow regulating device

Drafting device

Intercooling device

Answer:  Turbomachinery

 

Turbomachines work under ________ 

Newtons first law

Newtons second law

Newtons third law

Kepler’s law

Answer:  Newtons second law

 

The literature of heat transfer generally recognizes distinct modes of heat transfer. How many modes are there? 

a) One

b) Two

c) Three

d) Four

Answer:  c) Three

 

Unit of the rate of heat transfer is 

Joule

Newton

Pascal

Watt

Answer:  Watt

 

The calorific value of gaseous fuels is expressed in terms of ___________ 

Kcal

Kcal/kg

Kcal/m2

Kcal/m3

Answer:  Kcal/m3

 

Indicated power of a 4-stroke engine is equal to ___________ 

pLAN

2pLAN

pLAN/2

4pLAN

Answer:  pLAN/2

 

1 Pascal = 1 _____ 

a)N/mm2

b) N/m3

c) N/m2

d) N/mm3

Answer:  c) N/m2

 

1 Bar = ______ 

a)1×105 N/m2

b) 1×109 N/m2

c) 1×105 N/mm2

d) 1×106 N/m2

Answer:  a)1×105 N/m2

 

The tool life is said to be over if _______________. 

Poor surface finish is obtained

There is sudden increase in power consumption

Overheating due to heat of friction starts

All of the above

Answer:  All of the above

 

Cutting fluids are used to ____________. 

Cool the tool

Improve surface finish of the job

Cool the work piece

All of these

Answer:  All of these

 

In hole basis system, basic size is equal to ______________. 

a)maximum hole size

b) minimum hole size

c) upper deviation which is zero

d) none of the above

Answer:  a)maximum hole size

 

The overall width of a part is dimensioned as 3.00 ± 0.02. The upper limit and tolerance of the part are ______________. 

a) 3.02, 0.05

b) 3.02, 0.04

c) 3.03, 0.04

d) 3.03, 0.06

Answer:  a) 3.02, 0.05

 

While choosing a car, which of the product features is not considered by the customers? 

Mileage

Taste

Color

Passenger capacity

Answer:  Passenger capacity

 

In gears, distance between the points of contact of two mating teeth from the beginning of engagement to the end of engagement is known as ______________. 

a)Arc of contact

b)Path of contact

c)Path of approach

d)Module

Answer:  b)Path of contact

 

Which of these is not a speed control circuit in hydraulics system? 

a)Meter in

b)Sequencing

c)Meter out

d)Bleed off

Answer:  a)Meter in

 

Which of these is not an advantage of CNC machine? 

a)Reduced machining time

b)Reduced operators

c)Higher initial cost

d)Higher production

Answer:  a)Reduced machining time

 

The property of a material by which it can be beaten or rolled into thin sheets is called __________________. 

a)Elasticity

b)Plasticity

c)Ductility

d)Malleability

Answer:  d)Malleability

 

Low pressure, fast speed, noise and compact system are features of ______________ system. 

a)Hydraulics

b)Pneumatics

c)Electrical

d)None of them

Answer:  a)Hydraulics

 

The product from blast furnace is called 

a)Pig Iron

b)Cast Iron

c)Wrought Iron

d)Steel

Answer:  a)Pig Iron

 

Which is closest to the purest form of the iron? 

a)Wrought Iron

b)Cast Iron

c)Pig Iron

d)Steel

Answer:  a)Wrought Iron

 

Cold working of steel is defined as working 

a)At its recrystallisation temperature

b)Above its recrystallisation temperature

c)Below its recrystallisation temperature

d)At two thirds of the melting temperature of the metal

Answer:  c)Below its recrystallisation temperature

 

Stainless steel is so called because of its ______. 

a)High corrosion resistance

b)High strength

c)High ductility

d)Brittleness

Answer:  a)High corrosion resistance

 

Which among the following is a type of destructive test? 

a)Cupping test

b)Magnetic particle test

c)Dye penetrant

d)All of the above

Answer:  d)All of the above

 

What is meant by malleability? 

a)Metals undergo plastic deformation under compressive stresses

b)Metals can be drawn into wires

c)Both a. and b.

d)None of the above

Answer:  c)Both a. and b.

 

What is meant by ductility? 

a)Metals undergo plastic deformation under tensile loads

b)Metals can be drawn into sheets

c)Metals undergo elastic deformation under tensile loads

d)All of the above

Answer:  d)All of the above

 

In investment casting process which of the following is used for pattern making? 

a)Molten wax

b)Ceramics

c)Silica

d)Plaster of Paris

Answer:  a)Molten wax

 

How does pattern vary in size with casting? 

a)Pattern is larger in size

b)Casting is larger in size

c)Both have same size

d)None of these.

Answer:  a)Pattern is larger in size

 

When the molten metal is put into the mold, what is that temperature called? 

a)Pouring temperature

b)Melting temperature

c)Room temperature

d)Vapourising temperature

Answer:  b)Melting temperature