Model 4 Train Vs Pole/Signal Post/Man Section-Wise Topic Notes With Detailed Explanation And Example Questions
MOST IMPORTANT quantitative aptitude - 6 EXERCISES
-
Top 399+ Trains Based Time and Distance MCQs For BANK SSC »
-
New 500+ Aptitude Problems on Train For All BANK SSC Exam »
-
Top 499+ Aptitude MCQs on Trains Crossing Bridge/Platform »
-
New 500+ Aptitude MCQs on Train Crossing Pole/Post or Man »
-
Top 499+ Trains Problems Using Time and Distance For SSC »
-
Top 489+ Time And Distance MCQ Problems on Train For BANK »
The following question based on trains topic of quantitative aptitude
(a) 7.8 secs
(b) 8 secs
(c) 7.2 secs
(d) 8.2 secs
The correct answers to the above question in:
Answer: (c)
Using Rule 1,
Speed of train = 90 kmph
= $(90 × 5/18)$ m/sec. = 25 m/sec.
When a train crosses a post, it covers a distance equal to its own length.
Required time = $\text"Distance"/ \text"Speed"$
= $180/25$ = 7.2 seconds
Discuss Form
Read more crossing pole signal post man Based Quantitative Aptitude Questions and Answers
Question : 1
In what time will a train, 60 metre long, running at the rate of 36 km/hr pass a telegraph post ?
a) 8 seconds
b) 7 seconds
c) 6 seconds
d) 9 seconds
Answer »Answer: (c)
Speed of train = 36 kmph
= $({36 × 5}/18)$ m./sec. = 10 m./sec.
Required time = $\text"Length of train"/ \text"Speed of train"$
= $60/10$ = 6 seconds
Question : 2
A train passes two persons walking in the same direction at a speed of 3 km/hour and 5km/ hour respectively in 10 seconds and 11 seconds respectively. The speed of the train is
a) 27 km/hour
b) 25 km/hour
c) 24 km/hour
d) 28 km/hour
Answer »Answer: (b)
Let the speed of train be x kmph
and its length be y km.
When the train crosses a man, it covers its own length
According to he question,
$y/{(x - 3) × 5/18}$ = 10
18y = 10 × 5(x –3)
18y = 50x –150 ..... (i)
and, $y/{(x - 5) × 5/18}$ = 11
18y = 55(x–5)
18y = 55x –275 .... (ii)
From equations (i) and (ii),
55x –275 = 50x–150
55x –50x = 275 - 150
5x = 125 ⇒ x = $125/5$ = 25
Speed of the train = 25 kmph
Using Rule 7,A train crosses two men in $t_1$ seconds and $t_2$ seconds running in the same direction with the speed $s_1$ and $s_2$ then the speed of train is = ${t_1S_1 - t_2S_2}/{t_1 - t_2}$and length of train is l = $(S_1 - S_2)({t_1 - t_2}/{t_1 - t_2})$
Here, $S_1 = 3, S_2 = 5, t_1 = 10/3600 , t_2 = 11/3600$
Speed of train = ${t_1S_1 - t_2S_2}/{t_1 - t_2}$
= ${{3 × 10}/3600 - {5 × 11}/3600}/{10/3600 - 11/3600}$
= ${-25}/3600 × 3600/{- 1}$ = 25 m/sec
Question : 3
A train is running at 36 km/hr. If it crosses a pole in 25 seconds, its length is
a) 250 m
b) 255 m
c) 260 m
d) 248 m
Answer »Answer: (a)
Using Rule 1,
Speed of train = 36 kmph
= $({36 × 5}/18)$ m/sec = 10 m/sec.
Length of train = Speed × time
= 10 × 25 = 250 metre
Question : 4
A 120 m long train takes 10 seconds to cross a man standing on a platform. What is the speed of the train ?
a) 10 m/sec.
b) 15 m/sec.
c) 20 m/sec.
d) 12 m/sec.
Answer »Answer: (d)
Using Rule 1,
In crossing a man standing on platform, train crosses its own length.
Speed of train = $120/10 = 12$m/s
Question : 5
In what time will a 100 metre long train running with a speed of 50 km/hr cross a pillar ?
a) 72 seconds
b) 7.2 seconds
c) 70 seconds
d) 7.0 seconds
Answer »Answer: (b)
Speed of train = 50 kmph
= $({50 × 5}/18)$ m./sec. = $125/9$ m./sec.
Required time = $({100/125}/9)$ seconds
= $({100 × 9}/125)$ = 7.2 seconds
Question : 6
The time taken by a train 160 m long, running at 72 km/hr, in crossing an electric pole is
a) 9 seconds
b) 6 seconds
c) 4 seconds
d) 8 seconds
Answer »Answer: (d)
Distance covered in crossing a pole
= Length of train Speed of train = 72 kmph
= $({72 × 5}/18)$ m./sec. = 20 m./sec.
Required time = $160/20$ = 8 seconds
trains Shortcuts and Techniques with Examples
-
Model 1 Train Vs Train in same direction
Defination & Shortcuts … -
Model 2 Train Vs Train in opposite direction
Defination & Shortcuts … -
Model 3 Train Vs Bridge/Platform
Defination & Shortcuts … -
Model 4 Train Vs Pole/Signal Post/Man
Defination & Shortcuts … -
Model 5 Train Vs Both platform and a man/a pole
Defination & Shortcuts … -
Model 6 Change in speed Vs Change with time travel
Defination & Shortcuts …
Verbal Reasoning
Question & Answer Quiz
Non Verbal Reasoning
Question & Answer Quiz
Quantitative Aptitude
Question & Answer Quiz
Computer MCQ
Question & Answer Quiz
General English
Question & Answer Quiz
History GK
Question & Answer Quiz
Polity GK
Question & Answer Quiz
Geography GK
Question & Answer Quiz
Economy GK
Question & Answer Quiz
General Awareness GK
Question & Answer Quiz
Recently Added Subject & Categories For All Competitive Exams
Mensuration Aptitude Practice Mcq Questions IBPS Clerk 2024
Most Important Practice Mensuration aptitude multiple choice questions, answers with detailed solutions, PDF beginner to advanced for IBPS Clerk Prelims 2024
Continue Reading »
Top Clock Aptitude Questions and Answers PDF IBPS Clerk 2024
Recent Important IBPS Clerk Prelims 2024 Aptitude Clock MCQ Questions and answers with easy and logical explanation, PDF. Topic wise Free online practice test
Continue Reading »
New Time and Distance Aptitude MCQ PDF for IBPS Clerk 2024
Latest Time and Distance multiple choice questions and answers with solution PDF for IBPS Clerk Prelims 2024. Practice Speed Aptitude based Objective Mcq
Continue Reading »
Word Formation Objective Questions MCQs for IBPS Clerk 2024
Current year Important Objective Questions and Answers with Explanation for IBPS Clerk Prelims 2024 exam. English Vocabulary multiple choice practice exercises
Continue Reading »