प्रश्न और उत्तर का अभ्यास करें

प्र: A jogger running at 9 kmph alongside a railway track is 240 metres ahead of the engine of a 120 metre long train running at 45 kmph in the same direction. In how much time will the train pass the jogger  ? 1667 0

  • 1
    10 sec
    सही
    गलत
  • 2
    48 sec
    सही
    गलत
  • 3
    36 sec
    सही
    गलत
  • 4
    56 sec
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 3. "36 sec"
व्याख्या :

Answer: C) 36 sec Explanation: Given speed of jogger = 9 kmph Speed of train = 45 kmphAs they are in same direction, Relative speed = 45 - 9 = 36 kmph = 36x5/18 = 10 m/sDistance = 240 + 120 = 360 mts Time = distance/speed = 360/10 = 36 sec.

प्र: The two trains of lengths 400 m, 600 m respectively, running at same directions. The faster train can cross the slower train in 180 sec, the speed of the slower train is 48 kmph. Then find the speed of faster train  ? 3993 0

  • 1
    68 kmph
    सही
    गलत
  • 2
    52 kmph
    सही
    गलत
  • 3
    76 kmph
    सही
    गलत
  • 4
    50 kmph
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 1. "68 kmph"
व्याख्या :

Answer: A) 68 kmph Explanation: Let the speed of the faster train be 'X' kmph, Then their relative speed= X - 48 kmphTo cross slower train by faster train, Distance need to be cover = (400 + 600)m = 1 km. and Time required = 180 sec = 180/3600 hr = 1/20 hr.Time = Distance/Speed => 1/20 = 1/(x-48)X = 68 kmph

प्र: Boy, man, uncle, fireman, grandfather are... 5922 0

  • 1
    Feminine titles
    सही
    गलत
  • 2
    Masculine titles
    सही
    गलत
  • 3
    Both Feminine and Masculine titles
    सही
    गलत
  • 4
    None of the above
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 2. "Masculine titles"
व्याख्या :

Answer: B) Masculine titles Explanation: As they are the titles of male gender, they are called as Masculine titles.

प्र: What is the difference between creating String as new() and literal ? 1470 0

  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर :
व्याख्या :

When we create string with new() Operator, it’s created in heap and not added into string pool while String created using literal are created in String pool itself which exists in PermGen area of heap. String s = new String("Test"); does not put the object in String pool , we need to call String.intern() method which is used to put them into String pool explicitly. its only when you create String object as String literal e.g. String s = "Test" Java automatically put that into String pool.

प्र: A number, when 35 is subtracted from it, reduces to its 80 percent. What is four - fifth of that number  ? 1566 0

  • 1
    175
    सही
    गलत
  • 2
    140
    सही
    गलत
  • 3
    135
    सही
    गलत
  • 4
    95
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 2. "140"
व्याख्या :

Answer: B) 140 Explanation: x - 35 = 80x/100  => x = 175  => 4x/5 = 4x175/5 = 140.

प्र: If 25% of a number is subtracted from a second number, the second number reduces to its four-sixth. What is the ratio of the first number to the second number  ? 1621 0

  • 1
    4:3
    सही
    गलत
  • 2
    2:3
    सही
    गलत
  • 3
    3:2
    सही
    गलत
  • 4
    5:3
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 1. "4:3"
व्याख्या :

Answer: A) 4:3 Explanation: Let the numbers be p & q q-p/4 = 4q/6 => q-4q/6 = p/4 => 2q/6 = p/4  => p/q = 4/3

प्र: Who has become the first Indian woman to scale Mount Everest for the fourth time  ? 1544 0

  • 1
    Anshu Jamsenpa
    सही
    गलत
  • 2
    Dickey Dolma
    सही
    गलत
  • 3
    Lhakpa Sherpa
    सही
    गलत
  • 4
    Malavath Purna
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 1. "Anshu Jamsenpa"
व्याख्या :

Answer: A) Anshu Jamsenpa Explanation: Anshu Jamsenpa, the Indian mountaineer from Arunachal Pradesh, has scripted history by becoming the first Indian woman to scale the Mount Everest for the fourth time. She will attempt a double ascent to the world’s highest peak to make it a total five successful climbs. If she is successful with her double ascent this time, Ms Jamsenpa will set a record five climbs of Mt Everest.

प्र: _________ has successfully created the country’s first smart grid project, which will generate power from renewable sources of energy. 1531 0

  • 1
    Indian Institutes of Technology
    सही
    गलत
  • 2
    Indian Institutes of Engineering Science Technology
    सही
    गलत
  • 3
    Indian Institutes of Space Science and Technology
    सही
    गलत
  • 4
    Indian Institutes of Management
    सही
    गलत
  • उत्तर देखेंउत्तर छिपाएं
  • Workspace

उत्तर : 2. "Indian Institutes of Engineering Science Technology"
व्याख्या :

Answer: B) Indian Institutes of Engineering Science Technology Explanation: The Indian Institute of Engineering Science and Technology (IIEST) has successfully created the country’s first smart grid project, which will generate power from renewable sources of energy.  The project will soon be inaugurated by President Pranab Mukherjee, IIEST Director Prof Ajoy Kumar Roy. The smart grid will be synchronised to generate power from solar, wind and vegetable waste resources, depending on the weather conditions and availability of waste products. It is the first of its kind in the country.

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

      त्रुटि की रिपोर्ट करें

    कृपया संदेश दर्ज करें
    त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई