MANUFACTURING AND PRODUCTION TECHNOLOGY QUIZ

Inertia force acts

Perpendicular to the acceleration force

None of the listed here

Opposite to the direction of acceleration force

Along the direction of acceleration force

TRUE ANSWER : ?
YOUR ANSWER : ?

A mechanism is an assemblage of

Four or more than four links

Three links

Two links

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

If the opposite links of a four bar linkage are equal, the links will always form a

Pentagon

Rectangle

Triangle

Parallelogram

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statement is correct as regard to the difference between a machine and a structure?

The links of a machine may transmit both power and motion, whereas the members of a structure transmit forces only

All of these

The parts of a machine move relative to one another, whereas the members of a structure do not move relative to one another

A machine transforms the available energy into some useful work, whereas in a structure no energy is transformed into useful work

TRUE ANSWER : ?
YOUR ANSWER : ?

In a ball bearing, ball and bearing forms a

Spherical pair

Screw pair

Rolling pair

Turning pair

TRUE ANSWER : ?
YOUR ANSWER : ?

If the damping factor for a vibrating system is unity, then the system will be

Critically damped

Over damped

Under damped

Without vibrations

TRUE ANSWER : ?
YOUR ANSWER : ?

The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length)

√(T/3m)

√(3m/T)

(T.g)/3

T/3

TRUE ANSWER : ?
YOUR ANSWER : ?

The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

m.ω².r (cos 2θ/n)

m.ω².r sinθ

m.ω².r cosθ

m.ω².r (sin 2θ/n)

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following is an exact straight line mechanism using lower pairs?

Watt’s mechanism

Peaucellier’s mechanism

Robert’s mechanism

Grasshopper mechanism

TRUE ANSWER : ?
YOUR ANSWER : ?

The power transmitted by a belt is maximum when the maximum tension in the belt is _________ of centrifugal tension.

One-third

Double

Three times

Two-third

TRUE ANSWER : ?
YOUR ANSWER : ?