MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
According to Guest's theory, the failure occurs at a point in a member when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in simple tension test. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
For maximum power, the velocity of the belt will be |
| A. | <img src="/_files/images/mechanical-engineering/machine-design/588-388-1.png"> |
| B. | <img src="/_files/images/mechanical-engineering/machine-design/588-388-2.png"> |
| C. | <img src="/_files/images/mechanical-engineering/machine-design/588-388-3.png"> |
| D. | none of these |
| Answer» D. none of these | |
| 3. |
A draught produced by a chimney due to the difference of densities between the hot gases inside the chimney and cold atmospheric air outside it, is called natural draught. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 4. |
La-mont boiler, is a high pressure water tube steam boiler working on forced circulation. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 5. |
Loeffler boiler is a water tube boiler using a forced circulation of water. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
In a hydrodynamic lubricated bearing |
| A. | there is a thick film of lubricant between the journal and the bearing |
| B. | there is a thin film of lubricant between the journal and the bearing |
| C. | there is no lubricant between the journal and the bearing |
| D. | the lubricant is forced between the journal and the bearing, by external pressure |
| Answer» B. there is a thin film of lubricant between the journal and the bearing | |
| 7. |
The function of a connecting rod is not to convert reciprocating motion of the piston into rotary motion. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Which of the following statement is correct for a compound steam engine ? |
| A. | The cost of the engine, for the same power and economy, is more than that of a simple steam engine. |
| B. | The forces in the working parts are increased as the forces are distributed over more parts. |
| C. | The ratio of expansion is reduced, thus reducing the length of stroke. |
| D. | The temperature range per cylinder is increased, with corresponding increase in condensation. |
| Answer» D. The temperature range per cylinder is increased, with corresponding increase in condensation. | |
| 9. |
When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a |
| A. | slow speed engine |
| B. | medium speed steam engine |
| C. | high speed steam engine |
| D. | none of these |
| Answer» C. high speed steam engine | |
| 10. |
The shell diameter of a Locomotive boiler is |
| A. | 1 m |
| B. | 1.5 m |
| C. | 2 m |
| D. | 2.5 m |
| Answer» C. 2 m | |
| 11. |
The function of a crosshead is to guide motion of the __________ and to prevent it from bending. |
| A. | piston rod |
| B. | connecting rod |
| C. | eccentric rod |
| D. | valve rod |
| Answer» B. connecting rod | |
| 12. |
The cylinder dimensions of a compound engine may be designed on the basis of |
| A. | equal power developed in each cylinder for uniform turning moment |
| B. | equal initial piston loads on all pistons for obtaining same size of piston rod, connecting rod etc. for all cylinders |
| C. | equal temperature drop in each cylinder for economy of steam |
| D. | all of the above |
| Answer» E. | |
| 13. |
The function of a piston rod is |
| A. | to guide motion of the piston rod and to prevent it from bending |
| B. | to transfer motion from the piston to the cross head |
| C. | to convert heat energy of the steam into mechanical work |
| D. | to exhust steam from the cylinder at proper moment |
| Answer» C. to convert heat energy of the steam into mechanical work | |
| 14. |
The ratio of actual work available at the turbine to the energy imparted to the wheel is known as __________ efficiency. |
| A. | hydraulic |
| B. | mechanical |
| C. | overall |
| Answer» C. overall | |
| 15. |
The draught produced by a steam jet issuing from a nozzle placed in the ashpit under the fire grate of the furnace is called |
| A. | induced steam jet draught |
| B. | chimney draught |
| C. | forced steam jet draught |
| D. | none of these |
| Answer» D. none of these | |
| 16. |
The static head of a centrifugal pump is equal to the __________ of suction head and delivery head. |
| A. | product |
| B. | difference |
| C. | sum |
| Answer» D. | |
| 17. |
A ship with jet propulsion draws water through inlet orifices at right angles to the direction of its motion. The propelling force of the jet is (where a = Area of the jet, Vr = Relative velocity of the jet and ship = V + v, v = Velocity of the ship, and V = Velocity of the jet issuing from the ship) |
| A. | <img src="/_files/images/mechanical-engineering/hydraulic-machines/191-10-1.png"> |
| B. | <img src="/_files/images/mechanical-engineering/hydraulic-machines/191-10-2.png"> |
| C. | <img src="/_files/images/mechanical-engineering/hydraulic-machines/191-10-3.png"> |
| D. | <img src="/_files/images/mechanical-engineering/hydraulic-machines/191-10-4.png"> |
| Answer» C. <img src="/_files/images/mechanical-engineering/hydraulic-machines/191-10-3.png"> | |
| 18. |
In a reaction turbine, the draft tube is used |
| A. | to run the turbine full |
| B. | to prevent air to enter the turbine |
| C. | to increase the head of water by an amount equal to the height of the runner outlet above the tail race |
| D. | to transport water to downstream |
| Answer» D. to transport water to downstream | |
| 19. |
The power produced by the reaction turbine is __________ to the head of water. |
| A. | directly proportional |
| B. | inversely proportional |
| Answer» B. inversely proportional | |
| 20. |
In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 21. |
A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the |
| A. | kinetic head |
| B. | velocity head |
| C. | manometric head |
| D. | static head |
| Answer» D. static head | |
| 22. |
The speed ratio of a Francis turbine is defined as the ratio of the theoretical jet velocity to the peripheral speed at inlet. |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 23. |
The overall efficiency of a reaction turbine is the ratio of |
| A. | power produced by the turbine to the energy actually supplied by the turbine |
| B. | actual work available at the turbine to the energy imparted to the wheel |
| C. | workdone on the wheel to the energy (or head of water) actually supplied to the turbine |
| D. | none of the above |
| Answer» B. actual work available at the turbine to the energy imparted to the wheel | |
| 24. |
Work done by a turbine __________ upon the weight of water flowing per second. |
| A. | depends |
| B. | does not depend |
| Answer» B. does not depend | |
| 25. |
The object of producing draught in a boiler is |
| A. | to provide an adequate supply of air for the fuel combustion |
| B. | to exhaust the gases of combustion from the combustion chamber |
| C. | to discharge the gases of combustion to the atmosphere through the chimney |
| D. | all of the above |
| Answer» E. | |
| 26. |
In a glass tube type water indicator for a boiler, one end of the tube is connected to water space and the other end is connected to |
| A. | water space also |
| B. | chimney |
| C. | steam space |
| D. | superheater |
| Answer» D. superheater | |
| 27. |
In water tube boilers |
| A. | water passes through the tubes which are surrounded by flames and hot gases |
| B. | the flames and hot gases pass through the tubes which are surrounded by water |
| C. | forced circulation takes place |
| D. | none of these |
| Answer» B. the flames and hot gases pass through the tubes which are surrounded by water | |
| 28. |
A grate, in a boiler, is a place in the combustion chamber upon which fuel (wood or coal) is burnt. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 29. |
The mechanical efficiency of an impulse turbine is |
| A. | ratio of the actual power produced by the turbine to the energy actually supplied by the turbine |
| B. | ratio of the actual work available at the turbine to the energy imparted to the wheel |
| C. | ratio of the Work done on the wheel to the energy of the jet |
| D. | none of the above |
| Answer» C. ratio of the Work done on the wheel to the energy of the jet | |
| 30. |
The overshot water wheels are those in which the wheel runs entirely by the __________ of water. |
| A. | weight |
| B. | impulse |
| Answer» B. impulse | |
| 31. |
Drilling is an example of |
| A. | orthogonal cutting |
| B. | oblique cutting |
| C. | simple cutting |
| D. | uniform cutting |
| Answer» C. simple cutting | |
| 32. |
The tool made of cemented carbide wear out faster at |
| A. | slow speeds |
| B. | medium speeds |
| C. | fast speeds |
| D. | very fast speeds |
| Answer» B. medium speeds | |
| 33. |
The silicon carbide abrasive is chiefly used for grinding |
| A. | cemented carbide |
| B. | ceramic |
| C. | cast iron |
| D. | all of these |
| Answer» E. | |
| 34. |
A round nose tool may be fed eitner from left to right end or from right to left end of the lathe bed. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 35. |
A push broach as compared to pull broach |
| A. | has less number of teeth |
| B. | is short and stocky |
| C. | removes less material for each pass of the tool |
| D. | all of the above |
| Answer» E. | |
| 36. |
When the cutting edge of the tool is dull, then during machining |
| A. | continuous chips are formed |
| B. | discontinuous chips are formed |
| C. | continuous chips with built-up edge are formed |
| D. | no chips are formed |
| Answer» D. no chips are formed | |
| 37. |
Linear programming model can be applied to line balancing problem and transportation problem. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 38. |
The chart which gives an estimate about the amount of materials handling between various work stations is known as |
| A. | flow chart |
| B. | process chart |
| C. | travel chart |
| D. | operation chart |
| Answer» D. operation chart | |
| 39. |
The type of organisation preferred for a steel industry, is |
| A. | line organisation |
| B. | functional organisation |
| C. | line and staff organisation |
| D. | line, staff and functional organisation |
| Answer» E. | |
| 40. |
The procedure of modifying work content to give more meaning and enjoyment to the job by involving employees in planning, organisation and control of their work, is termed as |
| A. | job enlargement |
| B. | job enrichment |
| C. | job rotation |
| D. | job evaluation |
| Answer» C. job rotation | |
| 41. |
Bar chart is suitable for |
| A. | large project |
| B. | major work |
| C. | minor work |
| D. | all of these |
| Answer» D. all of these | |
| 42. |
Fixed position layout is also known as |
| A. | analytical layout |
| B. | synthetic layout |
| C. | static product layout |
| D. | none of these |
| Answer» D. none of these | |
| 43. |
In a network shown in the below figure, the critical path is along |
| A. | 1-2-3-4-8-9 |
| B. | 1-2-3-5-6-7-8-9 |
| C. | 1-2-3-4-7-8-9 |
| D. | 1-2-5-6-7-8-9 |
| Answer» C. 1-2-3-4-7-8-9 | |
| 44. |
The bending moment at a point on a beam is the algebraic __________ of all the moments on either side of the point. |
| A. | sum |
| B. | difference |
| Answer» B. difference | |
| 45. |
Work sampling is applied for |
| A. | estimation of the percentage utilisation of machine tools |
| B. | estimating the percentage of the time consumed by various job activities |
| C. | finding out time standards, specially where the job is not repetitive and where time study by stop watch method is not possible |
| D. | all of the above |
| Answer» E. | |
| 46. |
When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as __________ double cover butt joint. |
| A. | single riveted |
| B. | double riveted |
| Answer» C. | |
| 47. |
Whenever a material is loaded within elastic limit, stress is __________ strain. |
| A. | equal to |
| B. | directly proportional to |
| C. | inversely proportional to |
| Answer» C. inversely proportional to | |
| 48. |
When a bar is cooled to - 5 C, it will develop |
| A. | no stress |
| B. | shear stress |
| C. | tensile stress |
| D. | compressive stress |
| Answer» D. compressive stress | |
| 49. |
A load which is spread over a beam in such a manner that it varies uniformly over the whole length of abeam is called uniformly __________ load. |
| A. | distributed |
| B. | varying |
| Answer» C. | |
| 50. |
When shear force at a point is zero, then bending moment is __________ at that point. |
| A. | zero |
| B. | minimum |
| C. | maximum |
| D. | infinity |
| Answer» D. infinity | |