Some Basic Questions Of Science And Engineering

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  • 1/9 Questions

    Engineer's Day is celebrated in India in honor of:

    • Sir Mokshagundam Visvesvaraya
    • Aryabhata
    • Homi Bhabha
    • Yellapragada Subbarao
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About This Quiz

Explore foundational concepts in science and engineering through this quiz. It covers topics like electrical principles, programming history, and significant engineering figures, enhancing understanding in these areas.

Some Basic Questions Of Science And Engineering - Quiz

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  • 2. 

    Who discovered the radioactive element radium?

    • Marie Curie

    • Albert Einstein

    • Benjamin Franklin

    • Isaac Newton

    Correct Answer
    A. Marie Curie
    Explanation
    Marie Curie is the correct answer because she is widely recognized as the discoverer of the radioactive element radium. Curie, along with her husband Pierre Curie, conducted extensive research on radioactivity and made significant contributions to the field. In 1898, they successfully isolated radium from a uranium ore sample, marking a major breakthrough in the understanding of radioactive elements. Marie Curie's pioneering work in this area earned her numerous accolades, including becoming the first woman to win a Nobel Prize and the only person to win Nobel Prizes in two different scientific fields.

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  • 3. 

    Which of the following is NOT a green house gas?

    • Hydrogen

    • Carbon di oxide

    • Nitrous oxide

    • Methane

    Correct Answer
    A. Hydrogen
    Explanation
    Hydrogen is not a greenhouse gas because it does not trap heat in the Earth's atmosphere. Greenhouse gases, such as carbon dioxide, nitrous oxide, and methane, are responsible for the greenhouse effect, which causes the Earth's temperature to rise. Hydrogen, on the other hand, is a highly flammable gas and does not contribute to the greenhouse effect.

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  • 4. 

    The keyword used to transfer the control from sub routine to main function is:

    • Return

    • Go back

    • Exit

    • Escape

    Correct Answer
    A. Return
    Explanation
    The keyword "Return" is used to transfer the control from a subroutine to the main function. When a subroutine is called within a program, it performs its tasks and then returns the control back to the point where it was called. This allows the main function to continue executing the remaining code after the subroutine call.

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  • 5. 

    A step up motor increases:

    • Voltage

    • Current

    • Power

    • None of the above

    Correct Answer
    A. Voltage
    Explanation
    A step-up motor increases voltage because it is designed to convert a lower voltage input into a higher voltage output. This is achieved through the use of a transformer or other voltage boosting mechanism within the motor. By increasing the voltage, the motor is able to generate a higher level of power and drive larger loads. Increasing the current or power is not the primary function of a step-up motor.

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  • 6. 

    The frequency of a DC signal is:

    • 50 Hz

    • Zero

    • 100 Hz

    • None of the above

    Correct Answer
    A. Zero
    Explanation
    The frequency of a DC signal is zero because DC stands for direct current, which means that the current flows in only one direction with a constant magnitude. Unlike AC (alternating current), which changes direction periodically, DC does not have any oscillation or frequency. Therefore, the correct answer is zero.

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  • 7. 

    Unit of inductance is:

    • Farad

    • Ohm

    • Henry

    • Mho

    Correct Answer
    A. Henry
    Explanation
    The unit of inductance is Henry. Inductance is a property of an electrical circuit that opposes changes in current flow. It is measured in Henry (H), named after the American scientist Joseph Henry. Inductance is used to store energy in magnetic fields and is commonly found in devices such as inductors and transformers. Farad is the unit of capacitance, Ohm is the unit of resistance, and Mho (reciprocal of Ohm) is the unit of conductance.

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  • 8. 

    Who invented and patent dynamite?

    • A. Nobel

    • J. R. Gluber

    • G. Fawks

    • W. Bickford

    Correct Answer
    A. A. Nobel
    Explanation
    Alfred Nobel is the correct answer because he invented and patented dynamite. Alfred Nobel, a Swedish chemist and engineer, developed dynamite in the late 19th century. His invention revolutionized the construction and mining industries, as it provided a safer and more efficient way to handle explosives. Nobel's invention of dynamite had a significant impact on various fields, earning him a place in history as one of the most influential inventors.

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  • 9. 

    When was C programming invented?

    • 1987

    • 1967

    • 1997

    • 1977

    Correct Answer
    A. 1977
    Explanation
    C programming was invented in 1977.

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  • Current Version
  • Nov 16, 2023
    Quiz Edited by
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  • Feb 03, 2014
    Quiz Created by
    BrainyBiz
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