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Questions (81)

Q32CSE2011
The function of heavy water in a nuclear reactor is to:
  1. A Slow down the speed of neutrons ✓
  2. B Increase the speed of neutrons
  3. C Cool down the reactor
  4. D Stop the nuclear reaction
✓ Correct answer: (A)
Science & Technology › Energy & Nuclear
Q64CSE2011

What is the difference between a CFL and an LED lamp?

  1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material
  2. The average life span of a CFL is much longer than that of an LED lamp
  3. A CFL is less energy-efficient as compared to an LED lamp

Which of the statements given above is/are correct?

  1. A 1 only
  2. B 2 and 3 only
  3. C 1 and 3 only ✓
  4. D 1, 2 and 3
✓ Correct answer: (C)
Science & Technology › Energy & Nuclear
Q7CSE2014

With reference to technologies for solar power production, consider the following statements

  1. 'Photovoltaics' is a technology that generates electricity by direct conversion of light into electricity, while 'Solar Thermal' is a technology that utilizes the Sun's rays to generate heat which is further used in electricity generation process
  2. Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC)
  3. India has manufacturing base for Solar Thermal technology, but not for Photovoltaics

Which of the statements given above is/are correct?

  1. A 1 only ✓
  2. B 2 and 3 only
  3. C 1, 2 and 3
  4. D None
✓ Correct answer: (A)
Science & Technology › Energy & Nuclear

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