Moodle Activity Examples

An eclipse where the rays of the sun do not reach the satellite. This prevents
recharging of the solar cells of the satellite and decreases the power to the transmitter [17].

A period when the satellite and sun are close together and the noise from the sun prevents or hampers communications [17].

A coil in which the reactance is controlled by changing the permeability of the core [8].

(1) The condition existing in any circuit in which an increase in the input signal produces no further change in the output [13]. (2) The operating point of a vacuum tube or transistor at which a further increase in grid or base current no longer produces an increase in plate or collector current [6] [7]. (3) In a magnetic core, the condition in which a magnetic material has reached a maximum flux density and the permeability has decreased to a value of (approximately) 1 [8].

The term used to describe the use of unequal resistors in a servo's summing
network to compensate for differences between input and output signal levels [15].

(1) The process of subdividing a picture in an orderly manner into segments. This is used in facsimile transmission [17]. (2) Systematic movement of a radar beam to cover a definite pattern or area in space [18].

A four-digit subcategory code used to identify the functional measurement parameters that can be satisfied by any one of many pieces of test equipment [16].

The angle at which the receiving antenna must be aimed to capture the scattered energy of tropospheric scatter [10].

A diagram which shows, by means of graphic symbols, the electrical connections and functions of a specific circuit arrangement [1] [4].

A letter, abbreviation, or design used to represent specific characteristics or
components on a schematic diagram [1].