The thickness of oxide film is y at time t. If 
are the temperature dependent constants, the parabolic law of oxidation is given by
- Addition of silicon to cast iron
- Material of construction of the electrode used in the electric resistance welding is
- Ammonia leakage in the refrigeration system is detected by
- The underground well of a biogas plant is called the
- The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.
- Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical…
- Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when…
- Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare…
- Air standard Otto cycle is more efficient than the diesel cycle for the same
- Diamagnetic materials
- Function of fusible plug in a boiler is to
- Magnesium is present in
- Maraging steels derive their strength from the following mechanism:
- In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which…
- A dense structure of grinding wheel is not used for the
- In chemical dehumidification of air
- __________ is used for tying the steel columns to concrete foundation.
- The activity of pure hydrogen gas at 1000°C and 5 atm pressure
- Which of the following alloying elements is present in maximum percentage in high speed steel?
- The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring…
- Lead pencil contains
- Ferromagnetic materials owe their properties to __________ inner sub-shells.
- Out of the following, the best material capable of withstanding shock & vibration without the danger…
- A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/sec2 is
- Main constituent of bone ash is
- Brittleness induced due to the presence of sulphur in steel can be reduced by adding
- Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional…
- Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial…
- The value of for air & most common gases can be safely assumed to be
- The most commonly used moderator in nuclear power plants is