Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels.

Environmental Engineering in CE
Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels.

100

3

30

70

100

3

30

70

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering in CE
Fine grit present in sewage is removed in the __________ during sewage treatment.

Skimming tank

Trickling filter

Detritus tank

Grit chamber

Skimming tank

Trickling filter

Detritus tank

Grit chamber

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering in CE
If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is(i) Presumptive coli-form test(ii) Confirmed coli-form test(iii) Completed coli-form test

Both (i) and (iii)

All (i), (ii) and (iii)

Both (i) and (ii)

Only (i)

Both (i) and (iii)

All (i), (ii) and (iii)

Both (i) and (ii)

Only (i)

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering in CE
Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels.

140

170

200

120

140

170

200

120

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering in CE
Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for

All of these

Conversion of CO into CO₂ in the second compartment

Conversion of NOx into N₂ and NH₃ in the first compartment

Oxidation of unburnt hydrocarbon fuel in the second compartment

All of these

Conversion of CO into CO₂ in the second compartment

Conversion of NOx into N₂ and NH₃ in the first compartment

Oxidation of unburnt hydrocarbon fuel in the second compartment

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering in CE
Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.

None of these

Increase the dew point of

Catalytically convert SO₂ to SO₃ in

Reduce SO₂ content in

None of these

Increase the dew point of

Catalytically convert SO₂ to SO₃ in

Reduce SO₂ content in

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering in CE

Environmental Engineering in CE Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels.

Environmental Engineering in CE Fine grit present in sewage is removed in the __________ during sewage treatment.

Environmental Engineering in CE If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is(i) Presumptive coli-form test(ii) Confirmed coli-form test(iii) Completed coli-form test

Environmental Engineering in CE Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels.

Environmental Engineering in CE Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for

Environmental Engineering in CE Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.

Environmental Engineering in CE
Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels.

Environmental Engineering in CE
Fine grit present in sewage is removed in the __________ during sewage treatment.

Environmental Engineering in CE
If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is(i) Presumptive coli-form test(ii) Confirmed coli-form test(iii) Completed coli-form test

Environmental Engineering in CE
Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels.

Environmental Engineering in CE
Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for

Environmental Engineering in CE
Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.