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 120 m long train takes 10 seconds to cross a man standing on a platform. The speed of the train is:

A - 10 m/s

B - 12 m/s

C - 15 m/s

D - 20 m/s

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?

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 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 - Two trains running in the same direction at 40 km/hr and 22 km/hr completely pass one another in 1 minute. If the length of the first train is 125 m, the length of the second train is

A - 125 m

B - 150 m

C - 175 m

D - 200 m

Answer : C

Explanation

Relative speed =  (40-22)k/hr = 18km/hr =(18*5/18)m/sec.=5m/sec.
Let the length of the second train be x meters. then,
(125+x)/5= 60 ⇒ 125+x=300 ⇒ x =175m

Q 6 - Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 sec.What is the length of the faster train?

A - 23 m

B - 34 m

C - 27 m

D - 250/9 m

Answer : D

Explanation

Relative speed = (40-20)km/hr = 20km/hr =(20*5/18)m/sec. =50/9 m/sec.
Length of faster train = distance travelled by it in 5 sec. at 50/9 m/sec.
=(50/9*5)m = 250/9 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

A - 4.36 pm

B - 4.42 pm

C - 4.48 pm

D - 4.50 pm

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

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