Question

The angle through which the earth must turn to bring the meridian of a point directly in sun’s rays is called __________

(a) Hour angle

(b) Declination

(c) Latitude

(d) Air mass

This question was addressed to me at a job interview.

I want to ask this question from Solar Constant topic in chapter Solar Energy of Energy Engineering

Answer 1

The correct choice is (a) Hour angle

Easy explanation: The angle through which the earth must turn to bring the meridian of a point directly in sun’s rays is called Hour angle. And it is denoted by Greek letter ω (OMEGA). It is measured from noon based on the solar local time (LST).