The excess air required for the combustion of pulverized coal is of the order of about _______________ percent ?

Related Mcqs:

The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron ?

A. 159 B. 1837 C. 2537 D. 10000...

The majority charge carriers in p-type silicon are______________________?

A. Free electrons B. Ions C. Conduction electrons D. Holes...

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always____________________?

A. Increases B. Decreases C. Remain constant D. Increases to a maximum before decreasing...

Factor of safety in machine design is defined as the ratio of ultimate stress to _____________ stress ?

A. Working B. Bearing C. Yield D. None of these...

Tin based white metals are used, where bearings are subjected to___________________?

A. High pressure & load B. Low pressure & load C. High temperature D. Large surface wear...