mechanical engineering MCQs – Page 76

B. friction

C. viscosity

D. adhesion

E. cohesion

A. adhesion

B. compressibility

C. surface tension

E. viscosity

B. viscosity index

C. coefficient of viscosity

D. coefficient of compressibility

E. specific viscosity

B. p = T/2r

C. p = T/r

D. p = Txr

E. none of the above

B. 10,000

C. 2100

D. 1000

E. 2700

A. 0K

B. all temperature

D. 0C

A. The horizontal component of the hydro-static force on any surface is equal to the normal force on the vertical projection of the surface

B. The vertical component of the hydrostatic force on any surface is equal to the weight of the volume of the liquid above the area

C. Center of pressure acts at a greater depth than center of gravity

D. The horizontal component acts through the center of pressure for the vertical projection

A. dissolved air

B. heavy water

C. suspended matter

E. dissolved salt

A. any weight, floating or immersed in a liquid, is acted upon by a buoyant force

B. The point through which buoyant force acts, is called the center of buoyancy

D. Buoyant force is equal to the weight of the liquid displaced

E. Relative density of liquids can be determined by means of the depth of flotation of hydrometer

A. energy/unit area

B. distance

D. it has no units

E. none of the above

A. equal to the vapour pressure over the plane surface

B. none of the above

C. zero

E. greater than the vapour pressure over the plane surface

A. adhesion

B. viscosity

C. compressibility

E. cohesion

A. atmospheric pressure

B. force of cohesion

C. force of adhesion

D. viscosity

A. possess none of the above properties

B. are viscous

C. are compressible

D. possess surface tension

A. adhesion

B. all of the above

C. surface tension

D. cohesion

A. fluid

B. water

C. perfect solid

E. gas

A. surface tension

B. compressibility

D. viscosity

E. adhesion

B. Local atmospheric pressure depends upon elevation of locality only

C. Local atmospheric pressure is always below standard atmospheric pressure

D. A barometer reads the difference be-tween local and standard atmospheric pressure

E. Gauge piessure is equal to atmospheric pressure plus instrument reading

B. higher/lower depending on temperature

C. unpredictable

D. lower

E. same

A. For stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy

B. If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions

C. For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy

E. The center of buoyancy is located at the center of gravity of the displaced liquid

A. specific gravity = gravity x density

B. kinematicviscosity = dynamicviscosity x density

D. gravity = specific gravity x density

E. hydrostaticforce = surface tension x gravity

A. cannot be subjected to shear forces

B. flows

D. always expands until it fills any container

E. has the same shear stress.at a point regardless of its motion

B. none of the above

C. pressure of the liquid displaced

D. viscosity of the liquid

E. depth of immersion

A. it provides accurate readings

B. it provides suitable meniscus for the inclined tube

D. its density is less

E. it provides longer length for a given pressure difference

A. none of the above

B. at normal pressure of 760 mm

C. at 4C temperature

D. at mean sea level

A. 5.0 above the hydraulic gradient

B. 2.4 m above the hydraulic gradient

C. 10.0 m above the hydraulic gradient

D. none of the above

A. laminar

B. quasi static

C. static

D. steady state

A. it has low surface tension

B. is provides suitable meniscus

C. it is clearly visible

E. it has low vapour pressure

A. 4000 kg

B. 500 kg

C. 1500 kg

D. 1000 kg

A. 9.75 m/sec2

B. 10.2/m sec

C. 9 m/sec

E. 9.81 m/sec2

A. low density and viscosity

B. surface tension is no criterion

C. high density and viscosity

D. lower surface tension

A. 100C

C. 0C

D. 20C.

E. 0K

B. time motion unit

C. technique measurement unit

D. time movement unit

E. time method unit

A. management

B. president

C. labour court

E. board of directors

B. all of the above

C. proper utilisation of manpower

D. material handling

E. efficient working of machine

A. none of the above

B. past good workers

C. all of the above

D. past average workers

A. selling price of an item

B. break even point when machine re-quires change

C. depreciation value of a product

D. resale value of a product

A. past experience

B. convenience

C. fixed percentage of daily production

E. detailed calculations

A. each individual maintains functional efficiency

B. separation of planning and design part

C. strict adherence to specification

E. work is properly planned and distributed

A. flow of material

B. copying complicated profiles

D. none of the above

E. advancing a programme in automatic machines

A. production planning

B. production control

D. inventory control

E. capital budgeting

A. two time estimate

B. four time estimate

C. nil time estimate

E. three time estimate

A. Gilberth plan

B. Taylor plan

C. Emerson efficiency plan

A. all industries other than small scale industries have to train apprentices

C. all industries have to necessarily train the apprentices

D. all industries employing more than 100 workers have to recruit apprentices

E. industries have to train apprentices ac-cording to their requirement

A. forecasting sales

B. linear programming

C. none of the above

D. scheduling and routing

A. minimising the delays

B. operators activity

D. none of the above

E. making efficient despatching

A. 0.0001 minute

C. 0.006 minute

D. 0.06 minute

E. 0.001 minute

A. deposited in post office

B. deposited in the account of worker with employer or Reserve Bank of India

D. deposited in nationalised bank

E. credited into reserves of company

A. second

C. hour

D. none of the above

E. day

A. none of the above

B. smaller

C. equal

E. there is no such correlation