Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
Radiation
Conduction
Convection
Both (B) & (C)
- Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about
- The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation…
- The refractory lining of the bottom in a basic electric arc furnace is made of
- Which of the following heat treatment processes is usually applied to castings?
- The atmospheric temperature during melting of ice/snow (in the atmosphere)
- Pick out the wrong statement.
- Boiler tube size is specified by its thickness and __________ diameter.
- Limestone is added in the blast furnace (during pig iron manufacture) to
- Laser is a device to produce
- The life of a ball bearing is inversely proportional to
- The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress…
- More than 95% of __________ is present in corundum.
- Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition…
- Which of the following performance characteristics of a S.I engine is not affected by the front end…
- Which of the following has the highest modulus of elasticity (about 7 × 106 kg/cm2)?
- __________ of hard alloy and tool steel is done to make it easily machinable.
- Resilience of a bolt can be increased by increasing its
- In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length,…
- __________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it…
- The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 >…
- X-rays are
- Which of the following is the largest quantum of pressure?
- __________ property of a material is determined by the Herbert Pendulum device.
- Exposure to __________ accelerates the degradation of plastics.
- Closeness of packing is maximum in case of __________ crystal lattice.
- Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.
- Out of the following, the alloy which has equal percentage of constituents, is
- A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change.…
- The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer…
- Material of construction of foundry crucible is