GATE Practice Question and Answer

Q: Two trains of equal length are running on parallel lines in the same direction at 36 km/hr and 26 km/hr. The faster train passes the slower train in 36 sec. The length of each train is ? 1872 0

  • 1
    28 mts
    Correct
    Wrong
  • 2
    54 mts
    Correct
    Wrong
  • 3
    24 mts
    Correct
    Wrong
  • 4
    50 mts
    Correct
    Wrong
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Answer : 4. "50 mts"
Explanation :

Answer: D) 50 mts Explanation: Let the length of each train be x mts. Then, distance covered = 2x mts. Relative speed = 36 - 26 = 10 km/hr. = 10 x 5/18 = 25/9 m/sec. 2x/36 = 25/9 => x = 50 mts.

Q: When all the students in a school are made to stand in rows of 54, 30 such rows are formed. If the students are made to stand in rows of 45, how many such rows will be formed ? 1872 0

  • 1
    22
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    32
    Correct
    Wrong
  • 4
    26
    Correct
    Wrong
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Answer : 2. "36"
Explanation :

Answer: B) 36 Explanation: Total number of students = 54 x 30When arranged in rows of 45, number of rows formed are, 54x3045 = 36.

Q: An express traveled at an average speed of 100 km/hr, stopping for 4 min after every 75 km. How long did it take to reach its destination 600 km from the starting point ? 1871 0

  • 1
    6 hrs 24 min
    Correct
    Wrong
  • 2
    6 hrs
    Correct
    Wrong
  • 3
    7 hrs 21 min
    Correct
    Wrong
  • 4
    6 hrs 28 min
    Correct
    Wrong
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Answer : 4. "6 hrs 28 min"
Explanation :

Answer: D) 6 hrs 28 min Explanation: Time taken to cover 600 km = 600/100 = 6 hrs. Number of stoppages = 600/75 - 1 = 7 Total time of stoppages = 4 x 7 = 28 min Hence, total time taken = 6 hrs 28 min.

Q: Why do you want to work in the service line to which you have applied ? 1871 0

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Answer :
Explanation :

The interviewer is looking for similar things whether asking about company or position. The interviewer wants to : - Learn about your career goals and how this position fits into your plan. - Make sure that you are sincerely interested in the job and will be motivated to perform if hired. - Find out what you know about the company, industry, position. - Understand your priorities and preferences.

Q: Find the principal if the interest compounded at the rate of 10% per annum for two years is Rs. 420 ? 1871 0

  • 1
    Rs. 2000
    Correct
    Wrong
  • 2
    Rs. 2100
    Correct
    Wrong
  • 3
    Rs. 1900
    Correct
    Wrong
  • 4
    Rs. 2150
    Correct
    Wrong
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Answer : 1. "Rs. 2000"
Explanation :

Answer: A) Rs. 2000 Explanation: Given, Compound rate, R = 10% per annumTime = 2 yearsC.I = Rs. 420Let P be the required principal.A = (P+C.I)Amount, A = P1 + r100n (P+C.I) = P1 + 101002 (P+420) = P[11/10][11/10] P-1.21P = -420 0.21P = 420 Hence, P = 420/0.21 = Rs. 2000

Q: Which one of the following foreign agencies will assist the municipal agencies to improve quality of municipal schools through its School Excellence Programmes(SEP) ? 1871 0

  • 1
    IMF
    Correct
    Wrong
  • 2
    UNDP
    Correct
    Wrong
  • 3
    ADB
    Correct
    Wrong
  • 4
    UNICEF
    Correct
    Wrong
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Answer : 3. "ADB"
Explanation :

Answer: C) ADB Explanation: Asian Development Bank (ADB) announced that it will assist the municipal agencies to improve quality of municipal schools through its School Excellence Programme (SEP).

Q: The length of a brigade which a train 130 m long and traveling at 45kmph can cross in 30 seconds, is 1869 0

  • 1
    196 mts
    Correct
    Wrong
  • 2
    220 mts
    Correct
    Wrong
  • 3
    230 mts
    Correct
    Wrong
  • 4
    245 mts
    Correct
    Wrong
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Answer : 4. "245 mts"
Explanation :

Answer: D) 245 mts Explanation: Let the length of the brigade is x mtsThen Distance = 130 + x mtsgiven speed = 45 kmph = 45 x5/18 m/sTime = 30 secT = D/S => 30 = 130+x/(45x5/18)=> x = 245 mts.

Q: Electrical Arcing occurs when 1866 0

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Answer :
Explanation :

An electric arc is a visible plasma discharge between two electrodes that is caused by electrical current ionizing gasses in the air. Electric arcs occur in nature in the form of lightning.

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