Minimum thermal efficiency of a steam boiler may be around __________ percent
25
45
65
20
- In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________…
- Which of the following is an example of stress corrosion?
- Preheating before welding is done to
- A dummy activity is used in PERT network to describe the
- Which of the following metals reacts violently with water?
- Adhesives
- Uniform ramming of sand in green sand moulding process leads to
- Lead is added to 60:40 brass primarily to improve
- __________ is not a heat treatment process.
- Silicon in steel
- Ammonia gas can be dried by
- Pipelines carrying various utilities in chemical industries are identified by their colour codes. The…
- Glass reacts with
- Inertial forces are obtained, when the elastic forces are multiplied by __________ number.
- Drossing is a __________ operation.
- __________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in…
- Encyclopaedia of Chemical Technology has been
- The most important requirement for aluminium industry is the availability of cheap
- A spring material should have low
- Nickel is a __________ material.
- Laser welding is widely employed in the __________ industries.
- The starting of a car takes time in winter, because the
- For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other…
- Air-petrol ratio in an automotive petrol engine is around
- Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative…
- __________ remains constant during the adiabatic cooling of moist air.
- Which of the following commonly used condenser tube materials has the lowest thermal conductivity?
- Tesla metre per ampere (T. m/A) is the unit for the measurement of
- Materials having __________ lattice structure are usually the most ductile.
- Transformation range for ferrous material is the temperature interval during which __________ is formed…