A train 160 meters long crosses a pole in 8 seconds. What is its speed in km/h? MCQ with Answer and Explanation

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A train 160 meters long crosses a pole in 8 seconds. What is its speed in km/h?

A. 80 km/h

B. 84 km/h

C. 64 km/h

D. 72 km/h

Answer: Option D

Solution (By JKSSB Mock Tests)

Speed of train = 160 / 8 = 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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Question #1

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A cartwheel has a radius of 35 cm. How many revolutions must it make to cover a total distance of 1100 meters?

A. 500

B. 600

C. 700

D. 400

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Correct Answer: Option A

Explanation:
Circumference = 2 * (22/7) * 35 = 220 cm = 2.2 meters. Total distance = 1100 meters. Number of revolutions = 1100 / 2.2 = 500.

This question belongs to: Maths Time Speed and Distance

Question #2

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A train passes a static post in 12 seconds. If the speed of the train is 60 km/h, what is the length of the train?

A. 220 meters

B. 180 meters

C. 200 meters

D. 240 meters

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Correct Answer: Option C

Explanation:
Speed of train = 60 * (5/18) = 50/3 m/s. Length of train = Speed * Time = (50/3) * 12 = 200 meters.

This question belongs to: Maths Time Speed and Distance

Question #3

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Excluding stoppages, a bus travels at 60 km/h and including stoppages it travels at 50 km/h. How many minutes does the bus stop per hour?

A. 8 minutes

B. 15 minutes

C. 10 minutes

D. 12 minutes

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Correct Answer: Option C

Explanation:
Stoppage time per hour = (60 - 50) / 60 = 10 / 60 = 1/6 hour. In minutes = (1/6) * 60 = 10 minutes.

This question belongs to: Maths Time Speed and Distance

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