Test: Engine Emissions & Their Control - 2


10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering | Test: Engine Emissions & Their Control - 2


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This mock test of Test: Engine Emissions & Their Control - 2 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 10 Multiple Choice Questions for Mechanical Engineering Test: Engine Emissions & Their Control - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Engine Emissions & Their Control - 2 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Test: Engine Emissions & Their Control - 2 exercise for a better result in the exam. You can find other Test: Engine Emissions & Their Control - 2 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

The elements of most concern in regard to pollution caused by engines are

Solution:
QUESTION: 2

One of the major exhaust emissions from Cl engines compared to SI engine is

Solution:
QUESTION: 3

Select the correct statements among the following:
1. Decrease in air - fuel ratio in SI engines results in increase of CO and UBHC.
2. NOx emission is maximum in SI engines when the air - fuel ratio is nearly stoichiometric.
3. NOx emission in SI engines will be lowest during idling.

Solution:

QUESTION: 4

Photochemical smog is mainly due to

Solution:

NO2 + energy from sunlight → NO + O + Smog

QUESTION: 5

Which of the following catalyst material promotes the reaction of NOx ?

Solution:

The catalyst materials most used in catalytic converter are platinum, palladium, and rhodium. Palladium and platinum promote the oxidation of CO and HC. Rhodium promotes the reaction of NOx.

QUESTION: 6

Alcohol is the major source for the emission of

Solution:

Major emission problem when alcohol fuel is used is generation of aldehydes, an eye and respiratory irritant.

QUESTION: 7

Blue smoke in diesel engines indicate

Solution:
QUESTION: 8

Thermal converter cannot reduce emission of

Solution:
QUESTION: 9

Efficient operation of catalytic converters require maintenance of
1. temperature
2. equivalence ratio
3. pressure
4. direction of exhaust flow
Q. Select the correct statements from above:

Solution:
QUESTION: 10

EGR is the most effective way of reducing emission of

Solution: