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Angle made by plane surface with horizontal is called ________

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Angle made by plane surface with horizontal is called ________

(a) Slope

(b) Altitude angle

(c) Zenith angle

(d) Hour Angle

I got this question in an online quiz.

My question is based upon Solar Radiation Measurement in portion Solar Energy of Energy Engineering

1 Answer

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Best answer
Right choice is (a) Slope

Easy explanation: The slope is the angle made by the plane surfaces with the horizontal. It is considered positive for surfaces slopping towards the south and negative for surface slopping towards the north. Different types of measurements are calculated by slopes.

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