21.
Identify the non-renewable energy resource from the following.
A
Wave power
B
Wind power
C
Fuel cells
D
Coal
Answer and explanation
Correct Answer: D — Coal
Coal is an exhaustible source of energy.
ObjectiveMcq
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Identify the non-renewable energy resource from the following.
Wave power
Wind power
Fuel cells
Coal
Coal is an exhaustible source of energy.
Which among the following is not a renewable source of energy?
Hydro-power
Solar energy
Biomass energy
Geothermal energy
Biomass corresponds to the exhaustible wastes, so this isn’t a renewable source of energy.
Which of the following is a non-renewable resource?
Coal
Wildlife
Water
Forests
Amongst all the resources mentioned, Coal is a non-renewable resource.
Which of the following are negative effects on the soil and water due to conventional, mechanized farming practices?
soil erosion
all of the mentioned
soil compaction
reduction in soil organic matter
All the mentioned impacts are the negative effects on the soil & water due to conventional, mechanized farming practices.
The three primary soil macronutrients are _________
copper, cadmium and carbon
potassium, phosphorus and nitrogen
boron, zinc and manganese
carbon, oxygen and water
Potassium, phosphorus, and nitrogen are the three primary soil macronutrients.
Which of the following is not an important characteristic of the Green Revolution?
mechanized agriculture
hybrid seeds
slash and burn
monoculture
Slash & Burn isn’t an important characteristic of the Green Revolution.
Groundwater mining in coastal areas can result into _________
decrease in the toxicity of groundwater
decrease in the salinity of groundwater
increase in the water table
increase in the salinity of groundwater
Groundwater mining in coastal areas can result into an increase in the salinity of groundwater.
The stage in which the biological processes are used to purify water in a wastewater treatment plants is called?
primary sewage treatment
secondary sewage treatment
wastewater reduction
biochemical reduction
The stage in which the biological processes are used to purify water in a wastewater treatment plants is called Secondary Sewage Treatment.
Which of the following is considered as part of water use planning?
all of the mentioned
water diversion projects
storm sewer drainage
waste water treatment
All the mentioned issues come under water use planning.
Which of the following is a major source of groundwater contamination?
septic tanks
all of the mentioned
agricultural products
landfills
All of the mentioned options are major sources of groundwater contamination.
How the biological oxygen demand gets affected with the increased presence of organic matter in water?
the oxygen demand remains unchanged
none of the mentioned
the oxygen demand decreases
the oxygen demand increases
With the increased presence of organic matter in water, the oxygen demand increases.
The presence of high coliform counts in water indicate _________
hydrocarbon contamination
decreased biological oxygen demand
phosphorus contamination
contamination by human wastes
The presence of high coli-form counts in water indicate contamination by human wastes.
Which of the following are the example of Municipal and industrial discharge pipes?
nonpoint sources of pollution
point sources of pollution
irrigation
violations of the Clean Water Act
Point sources of pollution are the examples of Municipal & industrial discharge pipes.
External loses occur ___________ turbine casing.
inside
inside & outside
none of the mentioned
outside
External loses are those which occur outside the turbine casing.
Number of parallel exhausts required for a given steam flow rate of x is?
x/36.5
x/63.5
x/68.5
x/56.5
Number of parallel exhausts required for a given steam flow rate of x is, x/63.5.
For straight blades, the minimum blade height is __________ of the mean blade ring diameter.
20%
30%
40%
50%
For straight blades, the minimum blade height is 20% of the mean blade ring diameter.
The loss in efficiency from one stage to another is called?
Carry-over efficiency
Lost efficiency
None of the mentioned
Carry below efficiency
Carry-over efficiency is defined as the loss in efficiency from one stage to another.
The pressure drop in reaction turbines occurs in?
movable blades
fixed blades
both in nozzles & fixed blades
nozzles
The pressure drop in reaction turbines occurs in both, the nozzle & in fixed blades.
The Guide vanes remain stationary in?
Rateau & Curtis staging
None of the mentioned
Curtis staging
Rateau staging
The guide vanes remain stationary in velocity compounding to ensure better operating efficiency.
The another name for Velocity compounding is?
Rateau & Curtis staging
None of the mentioned
Curtis staging
Rateau Staging
The another name for Velocity compounding is Curtis Staging.