The best lubricants for a machine working at high temperature & load is
Grease
Solid lubricant
Animal oils
Mineral oils
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- Maximum consumption of limestone is in the __________ industry.
- Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
- The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2.
- Pick out the wrong statement.
- Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other…
- For the Stoke's law to be valid in the case of a falling sphere in a fluid, the
- An abrupt and sudden fall in the reading of barometer is an indication of the
- In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________…
- Fibre reinforced plastic (FRP) are
- Titanium is added to molten aluminium alloys before casting for the purpose of
- The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
- In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold…
- The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.
- The specific gravity of coal depends mainly on its __________ content.
- As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint…
- Which of the following processes follows the hardening process for reducing the hardening strains &…
- In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates,…
- Plants produce carbohydrates from the CO2 present in the atmosphere by
- A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through…
- Factor of safety is the ratio of the __________ stress to the working stress.
- X-rays are
- The main constituent of bones is
- Percentage of argon (by volume) in dry atmospheric air is about
- Dew point temperature always gives an indication of the __________ of the moist air.
- __________ is the process used for setting up compressive stresses in the surface of a metal to improve…
- Hot extrusion of aluminium is done in the temperature range of __________ °C.
- The thickness of oxide film is y at time t. If are the temperature dependent constants, the parabolic…
- Steels with high carbon equivalent have poor Weldability, because in these steels during welding
- Dephosphorization of molten pig iron is favoured by
- Tesla metre per ampere (T. m/A) is the unit for the measurement of