Question bank for Energy Managers & Energy Auditors
12.
Energy supplied by combustion of fuel is equal to
a) mass of fuel consumed x its calorific value
b) mass of fuel consumed x its density
c) mass of fuel consumed x its specific heat
d) mass of fuel consumed x its heat capacity
13.
In a coal fired boiler, hourly consumption of coal is 1000 kg. The ash content in the coal is 3%.
Calculate the quantity of ash formed per day. Boiler operates 24 hrs/day.
a) 50 kg
b) 300 kg
c) 33 kg
d) 720 kg
14.
Sankey diagram represents an entire input and output energy flow. State True or False?
15.
Material and energy balance will identify areas to concentrate for energy conservation.
True or False
16.
In a drying process moisture is reduced from 60% to 30%. Initial weight of the material is 200
kg. Calculate the final weight of the product.
a) 100
b) 120
c) 130
d) 114.3
17.
Energy supplied by electricity, Q in kCal is equal to _____ .
a) kWh x 8.6
b) kWh x 86
c) kWh x 860 d)
none
18.
Which one is a secondary form of energy?
a) Furnace oil
b) natural gas
c) electricity d)
coal
19.
In material and energy balance, cycle time play an important role.
True or False
20.
Sankey diagram is an useful tool to represent ____.
a) financial strength of the company
b) management philosophy
c) input and output energy flow
d) human resource strength of the company
Part – II:
Short type Questions and answers:
1.
The plant has four heat exchangers and cooling water is circulated through these exchangers. The
details are given below.
Heat
exchanger
Water flow, m
3
/h Temperature
raise, °C
1 200
7
2 300
8
3 400
3
4 500
2
1.4 Material and Energy Balance
24