- Aptitude - Home
- Aptitude - Overview
- Quantitative Aptitude
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 - How much time will a train 171 m long take to cross a bridge 229 m long , if it is running at a speed of 45 kmph?
Answer : C
Explanation
Speed = (45*5/18)m/sec = 25/2 m/sec. Required time =(171+229)/(25/2) sec. = (400*2/25)sec. =32 sec.
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 - Two trains are running in opposite directions at 36kmph and 45kmph cross each other in 20 sec. if one train is 200m long, the length of the other train is
Answer : D
Explanation
let the length of the other train be x meters. Sum of their length =(200+x)m Relative speed =(36+45) kmph =81kmph = (81*5/18)m/sec. = 45/2 m/sec. (200+x)/ (45/2) = 20 ⇒ 400 +2x = 900 ⇒ 2x = 500 ⇒ x = 250 ∴ length of the other train is 250m
Q 5 - A train takes 5 sec. to pass an electric pole. If the length of the train is 120 m, the time taken by it to cross a railway platform 180 m long ,is
Answer : A
Explanation
Speed of the train = (120/5)m/sec. =24m/sec. Time taken to cross the platform =(120+180)/24 sec. =300/24 sec= 25/2 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 - A train X start from Meerut at 4 pm and reaches Ghaziabad at 5p.m while another train Y start from Ghaziabad at 4p.m and reaches Meerut at 5.30 p.m . The two train will cross each other at
Answer : A
Explanation
Let the distance between meerut and Ghaziabad be x km. Time taken by y to cover x km =3/2 hours. Time taken by X to cover x km = 1 hours Speed of x = xkm/hr speed of y = 2x/3 km/hr Xy+2xy/3 =x ⇒ y (1+2/3) =1 ⇒ y = 3/5 hours = (3/5*60) min. =36 min. Hence, the two train meet at 4.36 p.m