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- Question
- A 220 m long train passes a signal post in 12 s. Find the speed f the train.?
Options- A. 72 km/h
- B. 60 km/h
- C. 66 km/h
- D. 69 km/h
- Correct Answer
- 66 km/h
ExplanationWe know that,
Speed = Distance/ Time
Speed of the train = 220/12 x (18/5) km/h - 1. A train covers 90 m in passing a standing man. Find the length of the train.
Options- A. 20 m
- B. 87 m
- C. 71 m
- D. 90 m Discuss
- 2. A train 50 meters long passes a platform 100 m long in 10 second. The speed of the train is?
Options- A. 10 km/hr
- B. 15 km/hr
- C. 54 km/hr
- D. 100 km/hr Discuss
- 3. A person see a train passing over 1 km long bridge. The length of the train is half that of bridge. If the train clears the bridge in 2 minutes the speed of the train is?
Options- A. 50 km/hr
- B. 45 km/hr
- C. 60 km/hr
- D. 30km/hr Discuss
- 4. Two trains 70 m and 80 m long respectively, run at the rates of 68 km and 40 km an hour respectively, on parallel rails in opposite directions. How long do they take to pass each other?
Options- A. 5 seconds
- B. 10 seconds
- C. 12 seconds
- D. 6 seconds Discuss
- 5. A train 110 metres in length travels at 60 km/hr.In what time will it pass a man which is walking against the train at 6 km an hour?
Options- A. 71/3 seconds
- B. 6 seconds
- C. 62/3 seconds
- D. Data inadequate Discuss
- 6. A 240 m long train crosses a platform of equal length in 27 s. What is the speed of the train in km/h?
Options- A. 48
- B. 60
- C. 56
- D. 64 Discuss
- 7. A train crossed a platform in 43 s. The length of the train is 170 m. What is the Speed of the train?
Options- A. 233 km/h
- B. 243 km/h
- C. 265 km/h
- D. Con not be determined Discuss
- 8. Two train are moving in opposite direction with speed of 6 m/s and 12 m/s, respectively. Find their relative speed.?
Options- A. 18 m/s
- B. 15 m/s
- C. 20 m/s
- D. 6 m/s Discuss
- 9. Two trains are moving in the same direction with speeds of 15 km/h and 21km/h respectively. What is the speed of trains in respect of each other?
Options- A. 26 km/h
- B. 15 km/h
- C. 6 km/h
- D. 24 km/h Discuss
- 10. The relative speed of a train in respect of a car is 90 km/h when train and car are moving opposite to each other. Find the actual speed of train . If car is moving with a speed of 15 km/h.?
Options- A. 80 km/h
- B. 105 km/h
- C. 75 km/h
- D. 100 km/h Discuss
Problems on Trains
Search Results
Correct Answer: 90 m
Explanation:
We know that, the distance covered by a train in passing a pole or a standing man or a signal post or any other object (of negligible length) is equal to the length of the train.
In this case, train covers 90 m to cross a standing man.
? Length of the train = 90 m
Correct Answer: 54 km/hr
Explanation:
Distance covered by train in 10 sec = (50 + 100) = 150 m
? Speed = 150/10 m/sec = 15 x (18/5) = 54 km/hr
Correct Answer: 45 km/hr
Explanation:
Distance covered in 2/60 hours = (1 + 1/2) = 3/2 km
Distance covered in 1 hour = (3/2) x (60/2) = 45 km
So, speed of the train = 45 km/hr
Correct Answer: 5 seconds
Explanation:
Total distance = 70 + 80 = 150 m
Relative speed = 68 + 40 = 108 kmph = 108 x (5/18) = 30 m/s
So time taken = 150 / 30 = 5 seconds.
Correct Answer: 6 seconds
Explanation:
? Relative speed of the train = 60 + 6 = 66 km/hr
= 66 x 5/18 m/sec = 55/3 m/sec
? Required time = 110 x (3/55) = 6 sec
Correct Answer: 64
Explanation:
By the formula, speed= Distance/ Time
= (240 + 240)/27 x (18/5)
= 480/27 x 18/5 = 64 km/h
Correct Answer: Con not be determined
Explanation:
Length of platform is not given. it can not be determined.
Correct Answer: 18 m/s
Explanation:
When two trains are moving in opposite directions then their relative speed is equal to the sum of the speed of both the trains.
? Required relative speed = 6 + 12 = 18 m/s
Correct Answer: 6 km/h
Explanation:
We know that, if two trains are running in the same direction, then relative speed is equal to the difference of the speeds of both the trains.
? Required relative speed = 21 - 15 = 6 km/h
Correct Answer: 100 km/h
Explanation:
Relative speed of train
= Speed of train + Speed of car
? 90 = Speed of train + 15
? Speed of train = 90 - 15 = 75 km/h
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