A train 130 meters long passes a bridge of length 270 meters in 30 seconds. Find the speed of the train in km/h. MCQ with Answer and Explanation

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A train 130 meters long passes a bridge of length 270 meters in 30 seconds. Find the speed of the train in km/h.

A. 50 km/h

B. 45 km/h

C. 54 km/h

D. 48 km/h

Answer: Option D

Solution (By JKSSB Mock Tests)

Total distance = 130 + 270 = 400 meters. Speed = 400 / 30 = 40/3 m/s. In km/h = (40/3) * (18/5) = 8 * 6 = 48 km/h.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A train 120 meters long is running at a speed of 54 km/h. How long will it take to cross a platform 180 meters long?

A. 18 seconds

B. 24 seconds

C. 22 seconds

D. 20 seconds

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Correct Answer: Option D

Explanation:
Speed of train = 54 * (5/18) = 15 m/s. Total distance = 120 + 180 = 300 meters. Time taken = 300 / 15 = 20 seconds.

This question belongs to: Maths Time Speed and Distance

Question #2

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A cart wheel turns 1000 revolutions to bridge a sector distance of 1320 meters. Find the diameter size of the turning wheel.

A. 50 cm

B. 42 cm

C. 38 cm

D. 46 cm

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Correct Answer: Option B

Explanation:
Distance covered in 1 single turn revolution = 1320 / 1000 = 1.32 meters = 132 cm. Circumference = 2 * (22/7) * r = 132 cm => Diameter (2r) * (22/7) = 132 => Diameter = 132 * 7 / 22 = 6 * 7 = 42 cm.

This question belongs to: Maths Time Speed and Distance

Question #3

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A train 100 meters long completely passes a static pole in 5 seconds. Find its speed in km/h.

A. 64 km/h

B. 80 km/h

C. 84 km/h

D. 72 km/h

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Correct Answer: Option D

Explanation:
Speed = 100 / 5 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.

This question belongs to: Maths Time Speed and Distance

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