FUELS

Moisture, ash content, volatile matter and fixed carbon are measured for coal as part of:

• a. Proximate analysis

• b. Proximate and Utlimate analysis

• c. Ultimate analysis  

• d. None of the above.

   

Select the compound which possess highest octane number and highest cetane number out of n-heptane, n-hexadecane, n-octane, iso-octane.

• Highest Octane number: n-octane; Highest Cetane Number: n-  hexadecane

• Highest Octane number: n-octane; Highest Cetane Number: n-heptane

• Highest Octane number: iso-octane; Highest Cetane Number: n-hexadecane

• Highest Octane number: n-octane; Highest Cetane Number: n-heptane.

Net calorific value is calculated by:

• N.C.V=G.C.V + 0.09H x 587

• . N.C.V= 0.09H + G.C.V x 587

• . N.C.V + G.C.V = -0.09H x 587

• N.C.V=G.C.V -0.09H x 587

The knocking characteristics of a diesel oil are expressed in terms of

• Octane number

• Cetane number

• 2-methylnaphtahlene

• isopentane

A good fuel should have low non-combustible matter content.

• TRUE

• FALSE