Mechanical Engineering Quiz 25
1 / 50
The air-fuel ratio in petrol engines-is controlled by__________________?
2 / 50
Standard air is the air at_____________________?
3 / 50
Extensive property of a system is one whose value______________________?
4 / 50
Sulphur in steel________________?
5 / 50
Queuing theory is used for____________________?
6 / 50
The notch angle of the Izod impact test specimen is________________?
7 / 50
Stoichiometric quantity of air is the___________________?
8 / 50
The edges of a boiler plate are bevelled to an angle of______________?
9 / 50
Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts___________________?
10 / 50
Gun metal contains__________________?
11 / 50
The mathematical technique for finding the best use of limited resources in an optimum manner is known as___________________?
12 / 50
Admiralty gun metal contains__________________?
13 / 50
Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?
14 / 50
Choose the correct statement?
15 / 50
The reasons which are basically responsible for the formation of a queue should be that ___________________?
16 / 50
The discharge through a reaction turbine with increase in unit speed____________________?
17 / 50
The C.G. of a plane lamina will not be at its geometrical centre in the case of a __________________?
18 / 50
Maximum percentage of carbon in ferrite is___________________?
19 / 50
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be________________?
20 / 50
Hardness of steel depends on_________________?
21 / 50
In detennining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than____________________?
22 / 50
The permissible stress for carbon steel under static loading is generally taken as__________________?
23 / 50
If a spring is cut down into two springs, the stiffness of cut springs will be _________________?
24 / 50
An ideal regenerative cycle is ______________________?
25 / 50
1 kg.m is equal to_________________?
26 / 50
A mechanism is an assemblage of ____________________?
27 / 50
In diesel engine, the compression ratio in comparison to expansion ratio is_______________?
28 / 50
Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be_______________?
29 / 50
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called_______________?
30 / 50
If the radius of wire stretched by a load is doubled, then its Young?s modulus will be_______________?
31 / 50
The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents_____________________?
32 / 50
Energy can neither be created nor destroyed but can be converted from one form to other is inferred from_________________?
33 / 50
Which of the following is the case of heat transfer by radiation ___________________?
34 / 50
Pressure ratio in gas turbines is the ratio of ____________________?
35 / 50
Which of the following manometer has highest sensitivity_________________?
36 / 50
The effort required to lift a load W on a screw jack with helix angle a and angle of friction
37 / 50
Barometer is used to measure__________________?
38 / 50
Which is false statement about case hardening. Case hardening is done by_______________?
39 / 50
When a reactor becomes critical, then the production of neutrons is_________________?
40 / 50
For measuring flow by a venturimeter, if should be installed in __________________?
41 / 50
The difference between the time available to do the job and the time required to do the job, is known as_________________?
42 / 50
Kinetic energy of the molecules in terms of absolute temperature (T) is proportional to________________?
43 / 50
Diesel fuel, compared to petrol is_________________?
44 / 50
Cooling water is required for following equipment in ammonia absorption plant__________________?
45 / 50
In above example, the minimum length of the coupler will be__________________?
46 / 50
Choose the wrong statement?
47 / 50
The machinability of steel is increased by___________________?
48 / 50
Elements of pairs held together mechanically is known as ___________________?
49 / 50
In nitrated parts, the origins of the fatigue cracks will occur at__________________?
50 / 50
In heat transfer, conductance equals conductivity (kcal/hr/sqm/?C/cm) divided by ________________?
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