Consider the following features of newer models of motor cars : I. > Radial tyres II. > Streamlined body III. > Multipoint fuel injection IV. > Catalytic converter with exhaust Which of these features make the newer models of motor cars more fuel efficien

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Q: 99 (IAS/2000)
Consider the following features of newer models of motor cars :
I. Radial tyres
II. Streamlined body
III. Multipoint fuel injection
IV. Catalytic converter with exhaust
Which of these features make the newer models of motor cars more fuel efficient ?

question_subject: 

Science & Technology

question_exam: 

IAS

stats: 

0,21,107,20,21,53,34

keywords: 

{'catalytic converter': [0, 1, 0, 0], 'motor cars': [0, 1, 0, 0], 'more fuel': [0, 1, 0, 0], 'exhaust': [0, 1, 1, 0], 'multipoint fuel injection': [0, 1, 0, 0], 'newer models': [0, 1, 0, 0], 'radial tyres': [0, 1, 0, 0], 'features': [2, 1, 2, 14], 'streamlined body': [0, 1, 0, 0]}

Among the given features, the ones that contribute to making newer models of motor cars more fuel efficient are:

III. Multipoint fuel injection
IV. Catalytic converter with exhaust

Multipoint fuel injection is a technology that delivers fuel to the engine in multiple smaller bursts, providing more precise control over the fuel-air mixture. This improves combustion efficiency and reduces fuel consumption.

Catalytic converter with exhaust is a device that helps reduce harmful emissions from the vehicle's exhaust gases. By converting pollutants into less harmful substances, it allows the engine to operate more efficiently and reduce fuel consumption.

Therefore, the correct answer is:
II, III and IV

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