GATE Practice Question and Answer

Q: A constructor estimates that 4 people can paint Mr. Karthik's house in 6 days. If he uses 5 people instead of 4, how long will they take to complete the job ? 2931 0

  • 1
    3 days
    Correct
    Wrong
  • 2
    26/3 days
    Correct
    Wrong
  • 3
    13/4 days
    Correct
    Wrong
  • 4
    24/5 days
    Correct
    Wrong
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Answer : 4. "24/5 days"
Explanation :

Answer: D) 24/5 days Explanation: we know that m1 x d1 = m2 x d2=> 4 x 6 = 5 x dwhere d = no. of days taken by 5 men to paintd = 24/5 days.

Q: In the following options, select the one which is different from the other three ? 2931 0

  • 1
    Concentration
    Correct
    Wrong
  • 2
    Concourse
    Correct
    Wrong
  • 3
    Radiation
    Correct
    Wrong
  • 4
    Confluence
    Correct
    Wrong
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Answer : 3. "Radiation"
Explanation :

Answer: C) Radiation Explanation: Radiation shows the property of spreading while the rest three shows concentration at a point.

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Answer : 2. "10"
Explanation :

Answer: B) 10 Explanation: Raj Tarun's age = 0 when he was born.Then, given his brother is 6 years old.Then his father is 6 + 32 = 38 when Raj Tarun was bornAnd his mother is 3 years yonger than his father => so his mother was 35 years old when Raj Tarun was bornand his sister is 25 year younger than his mother so Raj Tarun's sister was 10 years old when Raj Tarun was born.

Q: Rajesh rows in still water with a speed of 4.5 kmph to go to a certain place and comes back. Find his average speed for the whole journey, if the river is flowing with a speed of 1.5 kmph? 2928 0

  • 1
    2 kmph
    Correct
    Wrong
  • 2
    4 kmph
    Correct
    Wrong
  • 3
    6 kmph
    Correct
    Wrong
  • 4
    8 kmph
    Correct
    Wrong
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Answer : 2. "4 kmph"
Explanation :

Answer: B) 4 kmph Explanation: Let the distance in one direction = k kms Speed in still water = 4.5 kmph Speed of river = 1.5 Hence, speed in upstream = 4.5 - 1.5 = 3 kmph Speed in downstream = 4.5 + 1.5 = 6 kmph Time taken by Rajesh to row upwards = k/3 hrs Time taken by Rajesh to row downwards = k/6 hrs Now, required Average speed =Total distanceTotal speed = 2kk3 + k6 = 2k x 186k + 3k = 4 kmph    Therefore, the average speed of the whole journey = 4kmph.

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Answer : 2. "B"
Explanation :

Answer: B) B Explanation: The last sentence in the paragraph clearly gives support for the idea that the interest in Shakespeare is due to the development of his characters. Choice a is incorrect because the writer never makes this type of comparison. Choice c is wrong because even though scholars are mentioned in the paragraph, there is no indication that the scholars are compiling the anthology. Choice d is wrong because there is no support to show that most New Yorkers are interested in this work. There is no support for choice e either.

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Answer : 2. "2014"
Explanation :

Answer: B) 2014 Explanation: If After p years , commodity X will cost 60 rupees more than the commodity Y, then 320 + 60p = 740 + 20p + 60=> p = 12 So in year (2002 + 12 = 2014), commodity X will cost Rs.60 more than the commodity Y.

Q: The resolution of a printer is measured in 2920 0

  • 1
    DPI
    Correct
    Wrong
  • 2
    Megabits
    Correct
    Wrong
  • 3
    Hertz
    Correct
    Wrong
  • 4
    Inches
    Correct
    Wrong
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Answer : 1. "DPI"
Explanation :

Answer: A) DPI Explanation: Dots per inch (DPI, or dpi) is a measure of spatial printing or video or image scanner dot density, in particular the number of individual dots that can be placed in a line within the span of 1 inch (2.54 cm).

Q: The Length of the Day is determined in 2918 0

  • 1
    length of the hours
    Correct
    Wrong
  • 2
    length of the year
    Correct
    Wrong
  • 3
    astronomical units
    Correct
    Wrong
  • 4
    solar terms
    Correct
    Wrong
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Answer : 3. "astronomical units"
Explanation :

Answer: C) astronomical units Explanation: The Length of the Day is determined in Astronomical Units. The length of a day corresponds to the time the Earth takes to turn around on its axis, which is approximately 24 hours. But it's not exactly 24 hours.  This phenomenon is due to tides raised by the Moon which slow Earth's rotation. Because of the way the second is defined, the mean length of a day is now about 86 400.002 seconds, and is increasing by about 1.7 milliseconds per century.

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