Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is __________ mm.
15
25
10
30
- The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction…
- Young's modulus of a material is the measure of its
- In practice, the compression ratio of compression-ignition (CI) engine ranges from
- Which of the following material handling equipments is not suitable for moving materials in varying…
- Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by
- On being hit with a hammer, __________ will readily fracture.
- Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing…
- The two elements required to form substitutional solid solution should not have
- Identify the false statement
- Which of the, following is not associated with the functioning of a petrol engine?
- Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at…
- The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________…
- Which of the following is not a charge material for cupola?
- Which of the following is a commonly used manometric liquid for low pressure range?
- Baffles provided on the shell side of a shell and tube heat exchanger are meant for
- Metal shots used in shot blasting are made of
- Basicity of the slag in Indian blast furnace is in the range of
- The process of removal of scale formed during hot rolling of steel is termed as
- Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional…
- Uniform ramming of sand in green sand moulding process leads to
- Maximum permissible air velocity in pipelines is about __________ metre/second.
- Speed of a submarine in deep sea & that of an aeroplane is measured by a/an
- Which of the following approaches the ideal gas behaviour most closely?
- A solution which resists change in its pH value on addition of acid/alkali is called the __________…
- For separating small pieces of metal from engine oil of a car, the best separating technique is the
- Rankine cycle comprises of two isothermal and two __________ processes.
- Maraging steels derive their strength from the following mechanism:
- Cupola produces __________ iron.
- Dielectric
- As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint…