Reasoning With increasing costs of fuel and environmental concerns, hybrid cars are the way of the future. Hybrids provide both improved fuel economy and reduced emissions. Hybrid cars use a petrol engine and an electrical energy storage device, usually a battery of nickel-metal hydride cells. When a large amount of energy is required, the two work together; when a lesser amount of energy is required (at lower speeds around town), the stored electrical energy powers an electric motor. You won’t notice much difference from a conventional car when you drive a hybrid, except that there will be very little noise at low speeds. What you will notice, however, is the improved fuel economy and dashboard displays that inform you about the energy flow and fuel consumption. Most hybrid cars have shown reduced greenhouse gas emissions of around 25% compared with a petrol car of a similar type, and use 15% to 30% less fuel. The purchase price of a hybrid is around 10% more than a similar-sized petrol-driven car, but the saving in the use of fuel should soon pay for the difference.

93. The only source of propulsion in a hybrid car is an electric motor

	(a) True
	(b) False
	(c) Cannot say
	(d)

94. Hybrid cars use less fuel and are more economical than conventional petrol-driven cars

	(a) True
	(b) False
	(c) Cannot say
	(d)

95. The nickel-metal hydride cells add around 10% onto the cost of a hybrid car compared with a similar conventionally-powered car

	(a) True
	(b) False
	(c) Cannot say
	(d)

TOTAL

Detailed Solution

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