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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 train 210 m long is travelling with a speed of 63 kmph. How long will it take to pass a signal post?

Answer : A

Explanation

speed =(63*5/18)m/sec =35/2 m/sec
Required time =(210*2/35) sec. =12 sec.

Q 2 - A train 100 m long crosses a bridge of length 100 m in 6 sec. The train will cross another bridge of length 200 m in:

Answer : B

Explanation

Time taken to cover (100+100)m= 6 sec
Speed of the train = 200/6  m/sec.
Time taken to cover (100+200)m = (300*6/200) sec =9 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 - A train is running at 36kmph completely crosses another train having half its length and travelling in the opposite direction at 54kmph, in 12 seconds. If it passes a platform in 3/2 minute , the length of the platform is

Answer : C

Explanation

Let the length of slower train be x meters.
Then, the length of faster train = x/2 m.
Relative speed = (36+54)kmph =(90*5/18)m/sec. =25m/sec.
(x+x/2)/25= 12 ⇒  3x/2*25= 12  ⇒3x =600 ⇒ x =200
Length of slower train = 200m 
Let the length of the platform be y meters. Then,
(200+y)/(36*5/18)= 90 ⇒ 200+y= 900 ⇒ y= 700
Hence, the length of the platform is 700 m.

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

aptitude_trains.htm