Some Basic Questions Of Science And Engineering

Approved & Edited by ProProfs Editorial Team

The editorial team at ProProfs Quizzes consists of a select group of subject experts, trivia writers, and quiz masters who have authored over 10,000 quizzes taken by more than 100 million users. This team includes our in-house seasoned quiz moderators and subject matter experts. Our editorial experts, spread across the world, are rigorously trained using our comprehensive guidelines to ensure that you receive the highest quality quizzes.

Learn about Our Editorial Process

| By BrainyBiz

BrainyBiz

Community Contributor

Quizzes Created: 1 | Total Attempts: 1,019

Questions: 9 | Attempts: 1,021 | Updated: Nov 16, 2023

Questions

Settings

Feedback

During the Quiz End of Quiz

Difficulty

Sequential Easy First Hard First

Play as

Quiz Flashcard

Create your own Quiz

Share on Facebook Share on Twitter Share on Whatsapp Share on Pinterest Share on Email Copy to Clipboard Embed on your website

Questions and Answers

1.

A step up motor increases:
- A.
  
  Voltage
- B.
  
  Current
- C.
  
  Power
- D.
  
  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.

Rate this question:

3
0
2.

Unit of inductance is:
- A.
  
  Farad
- B.
  
  Ohm
- C.
  
  Henry
- D.
  
  Mho
Correct Answer
C. 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.

Rate this question:
3.

The frequency of a DC signal is:
- A.
  
  50 Hz
- B.
  
  Zero
- C.
  
  100 Hz
- D.
  
  None of the above
Correct Answer
B. 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.

Rate this question:
4.

When was C programming invented?
- A.
  
  1987
- B.
  
  1967
- C.
  
  1997
- D.
  
  1977
Correct Answer
D. 1977

Explanation
C programming was invented in 1977.

Rate this question:

1
0
5.

The keyword used to transfer the control from sub routine to main function is:
- A.
  
  Return
- B.
  
  Go back
- C.
  
  Exit
- D.
  
  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.

Rate this question:

1
0
6.

Engineer's Day is celebrated in India in honor of:
- A.
  
  Sir Mokshagundam Visvesvaraya
- B.
  
  Aryabhata
- C.
  
  Homi Bhabha
- D.
  
  Yellapragada Subbarao
Correct Answer
A. Sir Mokshagundam Visvesvaraya

Explanation
Engineer's Day is celebrated in India in honor of Sir Mokshagundam Visvesvaraya. He was a renowned engineer, statesman, and the Diwan of Mysore. Visvesvaraya made significant contributions to the field of engineering and played a crucial role in the development of India's infrastructure. He was instrumental in the construction of several dams, bridges, and irrigation systems. His expertise and dedication to engineering have made him a symbol of inspiration for aspiring engineers in India. Therefore, Engineer's Day is celebrated to commemorate his achievements and to acknowledge the importance of engineering in society.

Rate this question:
7.

Which of the following is NOT a green house gas?
- A.
  
  Hydrogen
- B.
  
  Carbon di oxide
- C.
  
  Nitrous oxide
- D.
  
  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.

Rate this question:
8.

Who discovered the radioactive element radium?
- A.
  
  Marie Curie
- B.
  
  Albert Einstein
- C.
  
  Benjamin Franklin
- D.
  
  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.

Rate this question:
9.

Who invented and patent dynamite?
- A.
  
  A. Nobel
- B.
  
  J. R. Gluber
- C.
  
  G. Fawks
- D.
  
  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.

Rate this question:

1
0

Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

Current Version
Nov 16, 2023

Quiz Edited by
ProProfs Editorial Team
Feb 03, 2014

Quiz Created by
BrainyBiz

Some Basic Questions Of Science And Engineering

A step up motor increases:

Unit of inductance is:

The frequency of a DC signal is:

When was C programming invented?

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

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

Which of the following is NOT a green house gas?

Who discovered the radioactive element radium?

Who invented and patent dynamite?