Chemical Engineering Basics Quiz 10
1 / 50
Starting friction is low in case of the ______ lubrication?
2 / 50
Stainless steel is welded with difficulty because of______?
3 / 50
Steel & cast iron pipes are produced by _______ casting ?
4 / 50
Sub zero treatment of steel is done to______?
5 / 50
Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting) ?
6 / 50
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of _______ will facilitate the most accurate measurement of the temperature ?
7 / 50
Spheroidising of a material is a/an _________ process?
8 / 50
Strain hardening effect in metals subjected to cold working is due to the ________ mechanism?
9 / 50
Silicon percentage in acid resistant cast iron is about _____?
10 / 50
Spherical shape of mercury droplets is due to its______?
11 / 50
Runge-Kutta method is used to solve a/an _____?
12 / 50
Speed of a submarine in deep sea & that of an aeroplane is measured by a/an_____?
13 / 50
Softening of hardened steel is done by its______?
14 / 50
Speisses is a mixture of the following ?
15 / 50
Specific gravity of hot metal (pig iron) is _______ times that of the blast furnace slag ?
16 / 50
Routing in production, planning & control is concerned with the_____?
17 / 50
Shrinkage allowance on pattern is provided to compensate for shrinkage when the _______?
18 / 50
Specific __________ is a dimensionless quantity ?
19 / 50
Sand used to stop the green sand from sticking to the pattern is termed as the _______ sand?
20 / 50
Steel is welded using the _________ flame ?
21 / 50
The ?transition temperature? for ductile to brittle behavior of steel increases with increase in the ______ content in steel?
22 / 50
Steels with high carbon equivalent have poor Weldability, because in these steels during welding_________?
23 / 50
Steel containing low percentage of nickel, chromium & tungsten are termed as the ______ steel ?
24 / 50
Temperature attained in soldering of metals is about _________ ?C?
25 / 50
The ?laughing gas? is___________?
26 / 50
Square steel key is normally strong in failure by shear & crushing. Keys are normally made of ________ steel bars?
27 / 50
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_______?
28 / 50
Strain hardening effect in a metal subjected to cold working is due to the _______ mechanism?
29 / 50
Steel produced from phosphatic iron is ________ in nature?
30 / 50
Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be__________?
31 / 50
The ability of tool steel to resist softening at high temperatures is termed as ___________ hardness?
32 / 50
Tempering of a material does not improve its______?
33 / 50
Satellite is a __________ material?
34 / 50
Screws are specified by their ______ diameters?
35 / 50
Sudden fall of atmospheric pressure by a large amount is an indication of the_______?
36 / 50
Stainless steel is welded using___________?
37 / 50
Solute atoms which cause yield point phenomenon in mild steel are/is__________?
38 / 50
Shampoos are commercially not available in the form of _____?
39 / 50
Spark plug is provided in a/an__________?
40 / 50
Surface tension of a liquid__________?
41 / 50
Silicon in steel___________?
42 / 50
Suitability of steel for its use in cable is judged by its strength in___________?
43 / 50
Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are ________ respectively ?
44 / 50
Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?
45 / 50
Stresses encountered in the metal forming processes are less than the ______ of the material?
46 / 50
Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal__________?
47 / 50
Super conduction in metals is observed at a temperature of _________ ?K?
48 / 50
Super heating of steam is done at constant_____?
49 / 50
Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode_________?
50 / 50
Steel balls are manufactured by_______?
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