__________ is the hardest material out of the following.
Boron carbide
Tungsten carbide
Hardened steel
Silicon carbide
- Induced draft fans provided in large thermal power plant boilers have __________ blades.
- The units of the rate constant for a second order reaction are
- In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb…
- In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then…
- With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
- Joining of thin foils is preferred to be done by
- Stresses encountered in the metal forming processes are less than the __________ of the material.
- Pick out the wrong statement
- The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction…
- Addition of __________ to steel does not help in improving its machinability.
- Which one can be directly solidified from gaseous state without entering into liquid state?
- During sensible cooling of air, its wet bulb temperature
- An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform…
- With increase in temperature, the electrical conductivity of a __________ decreases.
- Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about
- __________ is used for tying the steel columns to concrete foundation.
- Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
- Eutectoid composition of carbon steel at room temperature is
- The dimensional formula of bulk modulus of elasticity is same as that of the
- Which of the following is an unconventional source of energy?
- Lead is added to 60:40 brass primarily to improve
- Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?
- Maximum permissible sulphur content in steel is __________ percent.
- Preheating before welding is done to
- __________ of air does not increase with increase in temperature.
- Dephosphorization of molten pig iron is favoured by
- Tip of the match stick contains a mixture of
- Copper deposits are found in India at the following location:
- What is the value of included angle of a triangular notch for maximum discharge?
- Blow off cock is provided in steam boiler to