Higher Study | Theory of Machines

Practice Higher Study | Theory of Machines on Bissoy — browse topics below and open any question.

Gear Mechanisms and Machines Cams Gear Trains Velocity and Acceleration Analysis Balancing Gyroscope Flywheel Governors

Questions

Which of the following sentence is not correct?

ক

where did he went?

খ

what does he want?

গ

what are they doing ?

ঘ

what do they do?

Which of the following is a spring controlled governor?

ক

Hartnell

খ

Hartung

গ

Pickering

ঘ

all of the mentioned

Isochronism in a governor is desirable when

ক

the engine operates at low speeds

খ

the engine operates at high speeds

গ

the engine operates at variable speeds

ঘ

one speed is desired under one load

Which of the following statements is correct about the balancing of a mechanical system?

ক

If it is under static balance, then there will be dynamic balance also

খ

If it is under dynamic balance, then there will be static balance also

গ

Both static as well as dynamic balance have to be achieved separately

ঘ

None of the mentioned

Which of the following is a lower pair?

ক

ball and socket

খ

piston and cylinder

গ

cam and follower

ঘ

both a and b

Which one of the following mechanisms is an inversion of double slider-crank chain?

ক

Elliptic trammels

খ

Beam engine

গ

Oscillating cylinder engine

ঘ

Coupling rod of a locomotive

Which of the following is an inversion of single slider crank chain?

ক

Elliptical Trammel

খ

Hand Pump

গ

Oldham’s Coupling

ঘ

Scotch Yoke

Oldham’s coupling is used to connect two shafts which are

ক

intersecting

খ

parallel

গ

perpendicular

ঘ

co-axial

When the axes of first and last gear are co-axial, then gear train is known as

ক

simple gear train

খ

compound gear train

গ

reverted gear train

ঘ

epicyclic gear train

Which one of the following is true for involute gears?

ক

Interference is inherently absent

খ

Variation in centre distance of shafts increases radial force

গ

A convex flank is always in contact with concave flank

ঘ

Pressure angle is constant throughout the teeth engagement

When the speed of governor increases, then

ক

Height of governor and radius of rotation increase

খ

Height of governor and radius of rotation decrease

গ

Height of governor decreases but radius of rotation increases

ঘ

Height of governor increases but radius of rotation decreases

Which one of the following can completely balance several masses revolving in different planes on a shaft?

ক

A single mass in different planes

খ

Two masses in any two planes

গ

A single mass in one of the planes of the revolving masses

ঘ

Two equal masses in any two planes