Mechanical Engineering Quiz 21
1 / 50
Cold working________________?
2 / 50
In order to prevent knock in the S.I. engines, the charge away from the spark plug should have___________________?
3 / 50
With increase in speed of vehicle, the back pressure will________________?
4 / 50
A rocket works with maximum overall efficiency when air craft velocity is equal to the_________________?
5 / 50
Gas turbine works on_______________?
6 / 50
In the Emerson efficiency plan, a worker receives only his daily wage and no bonus is paid till his efficiency reaches__________________?
7 / 50
Mild steel belongs to the following category___________________?
8 / 50
The thermal efficiency of a diesel engine is of the order of_________________?
9 / 50
A panto graph is a mechanism with___________________?
10 / 50
The shear plane in case of bolts should_________________?
11 / 50
According to Recardo?s theory, detonation occurs due to______________________?
12 / 50
Large forgings, crank shafts, axles normally contain carbon up to________________?
13 / 50
Two plates spaced 150 mm apart are maintained at 1000?C and 70? The heat transfer will take place mainly by ___________________?
14 / 50
For the same compression ratio_____________________?
15 / 50
Coaxing is the procedure of increasing__________________?
16 / 50
Pessimistic time is___________________?
17 / 50
Poisson?s ratio is defined as the ratio of_________________?
18 / 50
A closed gas turbine in which fuel is burnt directly in the air is not possible because of__________________?
19 / 50
Annealing of white cast iron results in production of_________________?
20 / 50
The approximate straight line mechanism is a____________________?
21 / 50
Practical fluids___________________?
22 / 50
If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be_______________?
23 / 50
Formation of frost on evaporator in refrigerator ________________?
24 / 50
Aluminium bronze contains__________________?
25 / 50
A nuclear fission produces energy of following order in MeV___________________?
26 / 50
Tertiary air is the air used to____________________?
27 / 50
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred_________________?
28 / 50
Hot wire anemometer is used to measure_______________?
29 / 50
In natural circulation type boiler _______________?
30 / 50
In perpetual inventory control, the material is checked as it reaches its__________________?
31 / 50
Film boling occurs at _______________________?
32 / 50
The center of pressure of a surface subjected to fluid pressure is the point_______________?
33 / 50
Dimensions of surface tension are___________________?
34 / 50
In a centrifugal pump casing, the flow of water leaving the impeller, is___________________?
35 / 50
For burning 1 kg of carbon to CO as per chemically correct combusiton, amount of air required is___________________?
36 / 50
The energy of molecular motion appears as________________?
37 / 50
In elliptical trammels_________________?
38 / 50
Which is false statement about tempering. Tempering is done to_______________?
39 / 50
Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction___________________?
40 / 50
Longitudinal stress in a thin cylinder is__________________?
41 / 50
The effort required to lift a load W on a screw jack with helix angle a and angle of friction
42 / 50
In the aircraft propellers __________________?
43 / 50
Pick up the correct step used for scheduling a project by C.P.M.__________________?
44 / 50
Thermal efficiency of well maintained boiler will be of the order___________________?
45 / 50
For combustion of a fuel, following is essential_____________________?
46 / 50
A rocket engine for the combustion of its fuel_____________________?
47 / 50
Hard coke is produced by carborisation of coal at_______________?
48 / 50
The basic constituents of Hastelloy are_________________?
49 / 50
The most effective inhibitor of grain growth, when added in small quantities is__________________?
50 / 50
For which of the following substances, the gas laws can be used with minimum error_________________?
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