Which of the Following Features of a Telescope Determines Its

question 28

Multiple Choice

Which of the following features of a telescope determines its light gathering power?

• A) The focal length of the objective
• B) The focal length of the eyepiece
• C) The diameter of the objective
• D) Length of the telescope tube
• E) None of the above.

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Definitions:

Wye

A connection in three-phase systems where the ends of each phase are connected at a common point, forming a Y-like shape.

Delta

A method of connection for a three-phase electrical circuit that forms a triangle-like configuration.

Balanced Three-Phase System

A three-phase electrical system where all three phases carry equal currents and have the same voltage magnitude but are out of phase with each other by 120 degrees.

Single-Phase

An electrical power system that uses only two wires (one power wire and one neutral) to deliver alternating current.