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Trains - Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Trains. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - A 120 m long train takes 10 seconds to cross a man standing on a platform. The speed of the train is:
Answer : B
Explanation
Speed =(120/10) m/sec = 12 m/s
Q 2 - A 130 m long train crosses a bridge 30 seconds at 45 kmph. The length of the bridge is ?
Answer : C
Explanation
Let the length of the bridge be x m. Speed of the train = (130+x)/30 m/sec. But, speed =(45*5/18)m/sec. =25/2 m/sec. ⇒ (130+x)/30 = 25/2 ⇒ 130 + x = 375 ∴ x = 245 m
Q 3 - A train 100 m long moving at a speed of 50km/hr crosses a train 120m long coming from opposite side on parallel tracks in 6 sec. The speed of the second train is
Answer : B
Explanation
let the speed of the second train be x kmph.
Their relative speed = (50+x) kmph ={ (50+x)* 5/18) m/sec.
Sum of their lengths = (100+120)m =220 m
220/ [(50+x)*5/18] = 6 ⇒30 (50+x)= 3960
⇒ 30x =(3960-1500) = 2460
X = 82
Speed of the second train = 82 kmph.
Q 4 - A 150 m long train cross a walking at the speed of 6kmph in the opposite direction in 6 sec. The speed of the train is
Answer : B
Explanation
Let the speed of the train be x kmph. Their relative speed = (x+6) kmph = [ (x+6) *5/18]m/sec. ∴ 150/ (x+6)*5/18 = 6 ⇒ 30 (x+6) =(18*150) ⇒ 30x+180= 2700 ⇒ 30x = 2520 ⇒ x = 84 ∴ speed of the train is 84 kmph.
Q 5 - Two trains A and B start running together from the same point in the same direction at 60 kmph and 72 kmph. If the length of each train is 240 m, how long will it take for the train B to cross train A ?
Answer : D
Explanation
Relative speed =(72-60)kmph =12kmph =(12*5/18)m/sec = 10/3m/sec. Total distance covered= (240+240)m= 480m Required time =(480*3/10)sec. =144 sec.= 2 min.24 sec.
Q 6 - Two trains, each 100m long, moving in opposite directions, cross each other in 8 sec. If one is moving twice fast as the other , then the speed of the faster train is
Answer : C
Explanation
Let the speed of the trains be x m/sec. and 2x n/sec. Relative speed = (x+2x)m/sec. =3x m/sec. (100+100)/8 = 3x ⇒ 24x =200 ⇒ x =25/3 ∴ speed of faster train = (50/3)m/sec. = (50/3*18/5) km/gr = 60 km/hr
Q 7 - Two trains , one from station A to station B and the other from B to A start simultaneously . After meeting , the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speeds is
Answer : B
Explanation
(A's speed) : (b's speed ) = √b:√a= √16:√9 = 4:3