Question

1. a non - standard cycle

a begins at 0° and completes a 360° cycle
b begins at 0° and completes a 90° cycle
c begins at any point other than 0° and completes a 360° cycle
d is any positive waveform which does not vary

Explanation:

A standard cycle in waveforms or periodic - related concepts often starts at 0°. A non - standard cycle begins at any point other than 0° and still completes a 360° cycle. Option a describes a standard cycle. Option b is an incomplete cycle description. Option d is not a correct description of a non - standard cycle as it refers to a non - varying positive waveform which is not related to the concept of a non - standard cycle.

Answer:

C. begins at any point other than 0° and completes a 360° cycle