1. A train 100 m long is running at the speed of 30 km/hr.Find the time taken by it to pass a man standing near the railway line?

A. 12 sec B. 14 sec C. 13 sec D. 10 sec

Answer Answer: Option A Explanation: Speed of the train = ( 30*5/18) m/sec = (25/3) m/sec
Distance moved in passing standing man = 100m
Required time taken = 100/(25/3) = (100*3/25) sec = 12 seconds

2. A train is moving at a speed of 132 km/hr.If the length of the train is 110 meters,how long will it take to cross a railway platform 165 meters long?

A. 7 sec B. 7 1/2 sec C. 6 1/2 sec D. 6 sec

Answer Answer: Option B Explanation: Speed of train = (132 *5/18) m/sec = (110/3)m/sec
Distance covered in passing the platform= (110+165) =275 m
Therefore time taken = (275*3/110) sec = 15/2 sec= 7 1/2 sec

3. A man is standing on a railway bridge which is 180 m long.He finds that a train crosses the bridge in 20 sec but himself in 8 sec.Find the length of the train and its speed?

A. 54 km/hr B. 52 km/hr C. 58 km/hr D. 60km/hr

Answer Answer: Option A Explanation: Let the length of the train be X meters.
Then the train covers X meters in 8 sec and (X+180) meters in 20 seconds.
Therefore X/8 = X+180/20 = 20x = 8 (X+180) = X =120
Therefore length of the train = 120m
Speed of the train = (120/8) m/sec = m/sec=(15*18/5)km/hr = 54 km/hr

4. A train 150m long is running with a speed of 68 km/hr.In what time will it pass a man who is running at 8 km/hr in the same direction in which the train is going?

A. 5 sec B. 8 sec C. 6 sec D. 9 sec

Answer Answer: Option D Explanation: Speed of the train relative to man = ( 68-8)km/ph = (60*5/18)m/sec = (50/3) m/sec
Time taken by the train to cross the man
Time taken by it to cover 150 m at (50/3) m/sec = (150*3/50) sec = 9 seconds

5. A train 220 m long is running with a speed of 59kmph.In what time will it pass a man who is running at 7 km/ph in the direction opposite to that in which the train is going?

A. 16 sec B. 14 sec C. 12 sec D. 15 sec

Answer Answer: Option C Explanation: Speed of the train relative to man = (59+7) km/ph = (66*5/18)m/sec = (55/3) m/sec
Time taken by the train to cross the man
Time taken by it to cover 220 m at (55/3)m/sec = (220*3/55) sec =12 sec.