Power System - I (3140914) MCQs

MCQs of Conventional Generation, Load Curves and Tariffs

Showing 161 to 170 out of 425 Questions
14 15 16 17 18 19
161.
The coal that has highest ash content is
(a) Lignite
(b) Coking coal
(c) Bituminous coal
(d) Steam coal
Answer:

Option (a)

162.
Ash content of coal can be reduced by
(a) Pulverizing
(b) Washing
(c) Slow burning
(d) Mixing with high grade coal
Answer:

Option (b)

163.
Combustible elements in the fuel are
(a) Carbon and hydrogen
(b) Carbon, hydrogen and ash
(c) Carbon, hydrogen and sulphur
(d) Carbon, nitrogen and ash
Answer:

Option (c)

164.
The percentage of carbon in anthracites is usually
(a) More than 90%
(b) About 70%
(c) About 50%
(d) Below 40%
Answer:

Option (a)

165.
Solvent refined coal has low percentage of
(a) Impurities
(b) Sulphur
(c) Ash
(d) All of above
Answer:

Option (d)

166.
Presence of sulphur content in coal will cause
(a) Spontaneous combustion during coal storage and sir heater corroding
(b) Clinkering and slagging
(c) Facilitating ash precipitation
(d) All of above
Answer:

Option (d)

167.
Sulphur content of liquid fuels assumes importance from the point of view of
(a) Firing rate
(b) Heating rate
(c) Corrosion
(d) Efficiency
Answer:

Option (c)

168.
Chemical composition of coal is given by
(a) Ultimate analysis
(b) Proximate analysis
(c) Gross analysis
(d) Any of above
Answer:

Option (a)

169.
The analysis giving fixed carbon, volatile combustible matter, ash and moisture is called the
(a) Ultimate analysis
(b) Proximate analysis
(c) Gross analysis
(d) Orast analysis
Answer:

Option (b)

170.
Ultimate analysis of fuel determines the percentage of
(a) Ash, volatile matter and moisture
(b) Total carbon by weight
(c) Unit weight of hydrogen, oxygen, nitrogen, sulphur and ash
(d) None of the above
Answer:

Option (c)

Showing 161 to 170 out of 425 Questions
14 15 16 17 18 19