Trains - Online Quiz


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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.

Questions and Answers

Q 1 - A train with a speed of 60 kmph crosses a pole in 30 seconds. The length of the train is

A - 500 m

B - 750 m

C - 900 m

D - 1000 m

Answer : A

Explanation

speed =  (60*5/18)m/sec  = 50/3 m/sec.
Length of the train = (50/3* 30)m = 500 m 

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?

A - 40 sec

B - 35 sec

C - 32 sec

D - 30 sec

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 - Two trains are running in opposite side with speeds of 62 kmph and 40 kmph respectively. If the length of one train is 250m and they cross each other in 18 sec. , the length of the other train is

A - 140 m

B - 230 m

C - 260 m

D - None of these

Answer : C

Explanation

Let the length  of the other train be x meters.
Sum of their length = (250*x) m 
Relative speed = (62+40)kmph = 102kmph
=(102*5/18) m/sec. = 85/3 m/sec.
(250+x)/(85/3) =18   ⇒ 3(250+x) = (85*18)
⇒  750+3x =1530 ⇒  3x = 780 ⇒ x = 260
∴   length of the other train = 260 m

Q 4 - A train 100 m in length passes a milestone in 10 sec. and another train of the same length is going in opposite direction in 8 sec. The speed of the second train is

A - 36 kmph

B - 48 kmph

C - 54 kmph

D - 60 kmph

Answer : C

Explanation

Speed of the first train = (100/10)m/sec. =  10m/sec.
Let the speed of the second train be x m/sec.
200/ (10+x) = 8   ⇒ 8(10+x) =200 ⇒ 8x = 120 ⇒ x =15 
∴  speed of the second train =15m/sec. = (15*18/5) =54km/hr

Q 5 - A train moving at the rate of 36 km per hour crosses a standing man in 10 sec. It will cross a platform 55m long, in

A - 11/2 sec

B - 6 sec

C - 15/2 sec

D - 31/2 sec

Answer : D

Explanation

speed of the train = (36*5/18)m/sec. =10m/sec.
Let the length of the second train be x meters. Then, x/10 =10 ⇒ x =100m
Time taken by the train to cross the platform = (100+55)/10 sec.=31/2 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

A - 30 kmph

B - 45 kmph

C - 60 kmph

D - 75 kmph

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

A - 2:3

B - 4:3

C - 6:7

D - 9:16

Answer : B

Explanation

(A's speed) : (b's speed ) = √b:√a= √16:√9 = 4:3


aptitude_trains.htm

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