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 132m long passes a telegraph post in 6 seconds. The speed of the train is

A - 70 kmph

B - 72 kmph

C - 79.2 kmph

D - 80 kmph

Answer : C

Explanation

speed =(132/6)m/sec =22 m/sec.
=(22*18/5) kmph = (396/5) = 79.2 kmph

Q 2 - A train travelling at a speed of 30 m/sec crosses a platform 600 m long in 30 sec. The length of the train is?

A - 120 m

B - 150 m

C - 200 m

D - 300 m

Answer : D

Explanation

Let the length of the train be X m . then its speed =(600+x)/30 m/sec.
∴ (600+X)/30 =30 ⇒ 600+x =900 ⇒ x =300m

Q 3 - A train 270 m long is moving at a speed of 25 kmph. It will cross a man coming from the opposite direction at a speed of 2kmph in

A - 36 sec

B - 32 sec

C - 28 sec

D - 24 sec

Answer : A

Explanation

Their relative speed =(25+2)kmph =27kmph  = (27*5/18) m/sec. =15/2 m/sec.
Required time = 270/ (15/2) sec. = (270*2)/15   sec.= 36 sec.

Q 4 - A train overtakes two persons two persons walking in the same direction in which the train is going. These persons are walking at the rate of 2km/hr and 4km/hr and the train passes them completely in 9 sec. and 10 sec. respectively. The length of the train is

A - 72 m

B - 54 m

C - 50 m

D - 45 m

Answer : C

Explanation

let the length of the train be X km and its speed be y km/hr.
Speed of the train relative to first man = (y-2) km/hr
Speed of the train relative to second man =(y-4)km/hr
∴ x/(y-2) = 9/(60*60) and x/(y-4) =10/(60*60)
⇒ y-2 =400x and y-4 =360x
⇒ 400x+2=360x+4 ⇒40x=2 ⇒x=1/20km =(1/20*1000)m= 50m
∴ length of the train =50m

Q 5 - A train of length 150m takes 10 sec. to pass over another train 100m long coming from the opposite direction. If the speed of the first train be 30 kmph, then the speed of the second train is

A - 54 kmph

B - 60 kmph

C - 72 kmph

D - 36 kmph

Answer : B

Explanation

Relative speed =(150+100)/10 m/sec.  =25 m/sec.= (25*18/5)km/hr = 90 km/hr 
∴ speed of the  second train = (90-30) kmph  = 60 kmph

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

A - 560 m

B - 600 m

C - 700 m

D - 750 m

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 - Two goods trains each 500m long, are running in opposite directions on parallel tracks. Their speeds are 45km/hr and 30km/hr respectively. The time taken by the slower train to pass the driver of the faster one is

A - 12 sec

B - 24 sec

C - 48 sec

D - 60 sec

Answer : C

Explanation

Relative speed = (45+30)km/hr =  75km/hr =(75*5/18)m/sec. = 125/6 m/sec.
Distance covered = (1500-500)= 1000m
Required time = (1000*6/25) sec.  =48 sec


aptitude_trains.htm

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