Paper 1 · People, Development and Environment
UGC NET June 2024 Cancelled (18.06.2024) Shift-II
Which of the following are true about Solar Thermal Energy Collectors (STEC)? Choose the most appropriate answer from the options given below.
- 1. The basic unit of a STEC is a solar cell
- 2. STECs may be flat-plate or concentrating type
- 3. Temperature in STECs may rise over a thousand degrees centigrade
- 4. STECs can produce electricity
- 5. The paraboloid dish collector is an example of a STEC where temperature can go up to 2000 degrees C
A1 and 4 only
B2, 3, 4 and 5 only ✓ Correct
C1, 2, 3 and 5 only
D1, 2, 3, 4 and 5
Correct answer: (B) 2, 3, 4 and 5 only — Statements 2, 3, 4 and 5 are true, so the answer is 2, 3, 4 and 5.
Explanation
★Statements 2, 3, 4 and 5 are true, so the answer is 2, 3, 4 and 5.
★STECs collect the sun's heat rather than converting light directly to electricity.
★They may be flat-plate or concentrating type, so statement 2 is true.
★Concentrating types can raise the temperature over a thousand degrees, so statement 3 is true.
★The collected heat can be used to generate electricity, so statement 4 is true.
★The paraboloid dish collector can reach up to 2000 degrees, so statement 5 is true; the basic unit is not a solar cell, so statement 1 is false.
Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.
Shared by Mcqkart · via Mcqkart.in