Mechanical Engineering Quiz 19
1 / 50
The thermal diffusivities for gases are generally_____________________?
2 / 50
Ammonia is __________________?
3 / 50
Maximum temprature in a gas turbine is of the order of COMPRESSORS, GAS TURBINES AND JET ENGINES______________________?
4 / 50
Specific speed for reaction turbines ranges from___________________?
5 / 50
The bank of tubes at the back of domestic refrigerator are _________________?
6 / 50
Locomotive boiler is of the following type__________________?
7 / 50
Moderator in nuclear plants is used to__________________?
8 / 50
Sulphur in coal results in___________________?
9 / 50
The ratio of isentropic work to Euler work is known as_____________________?
10 / 50
A projectile is fired at an angle 9 to the vertical. Its horizontal range will be maximum when 9 is__________________?
11 / 50
First law of thermodynamics furnishes the relationship between______________________?
12 / 50
Air fuel ratio for idling speed of a petrol engine is approximately_________________?
13 / 50
Power impulses from an I.C engine are somoothed out by__________________?
14 / 50
A 5 BHP engine running at full load would consume diesel of the order of_________________?
15 / 50
In the perpetual inventory control, the material is checked when it reaches its________________?
16 / 50
A hydraulic intensifier normally consists of __________________?
17 / 50
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 9. Sensitivity of inclined tube to sensitivity of U-tube is equal to________________?
18 / 50
Intercooling in gas turbine results in ____________________ ?
19 / 50
Non uniform flow occurs when_________________?
20 / 50
Which of the following is not the unit of energy_________________?
21 / 50
For a compressor, least work will be done if the compression is________________ ?
22 / 50
The ignition of charge by some hot surface in the engine cylinder before operation of spark plug is known as________________?
23 / 50
Which of the following nuclear reactor does not need a heat exchanger for generation of steam____________________?
24 / 50
The value of the product of molecular weight and the gas characteristic constant for all the gases in S.I. units is________________?
25 / 50
In a cycle, the spark lasts roughly for ____________________?
26 / 50
For the same power developed in I.C engines, the cheaper system is_____________?
27 / 50
Losses in a centrifugal compressor are due to__________________?
28 / 50
Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler _________________?
29 / 50
An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of__________________?
30 / 50
Cochran boiler is a__________________?
31 / 50
Gaseous-fuel guarantees are based on___________________?
32 / 50
In the crankcase method of scavenging, the air pressure is produced by_________________?
33 / 50
If a rigid body is in equilibrium under the action of three forces, then _____________________?
34 / 50
Total emissivity of polished silver compared to black body is___________________?
35 / 50
Ignition lag is__________________?
36 / 50
Which law states that the internal energy of a gas is a function of temperature__________________?
37 / 50
Expediting function consists in keeping a watch on__________________?
38 / 50
Absorption system normally uses the following refrigerant___________________?
39 / 50
In water wall furnace, the heat is transferred to the water-walls by _________________?
40 / 50
In a diesel engine, the fuel is ignited by___________________?
41 / 50
The pressure of reheat steam after passing through reheater compared to inlet condition is _________________?
42 / 50
For very great pressures, viscosity of moss gases and liquids__________________?
43 / 50
Taper on the cotter and slot is provided_________________?
44 / 50
Pick up the wrong statement Nickel and chromium in steel help in _________________?
45 / 50
The behaviour of coal in a furnace is determained by_______________________?
46 / 50
Pressure of the order of 10?? torr can be measured by__________________?
47 / 50
When a nut is tightened by plaping a washer below it, the bolt will be subjected to following type of loads___________________?
48 / 50
Current assets include_______________?
49 / 50
U238 will undergo fission by_________________?
50 / 50
The advantage of the piston valve over D-slide valve is that in the former case____________________?
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