General Written pt 2

1 purpose of schematic diagrams is to show the

Functional location of components withing a system

What happens to current in a circuit if all resistors double in value?

The current is cut in half. Ohms law, current is inversely proportional to resistance

The voltage drop in a circuit of known resistance is dependent on

A increase in these factors will increase inductive reactance of a circuit.

Inductance & frequency.

The presence of any small amount of potassium carbonate deposits on the top of ni Cad battery cells in service is an indication of?

Normal operation

Method used to rapidly charge a nickel cadmium battery uses

Constant voltage and varying current

A detail drawing is a description of a

Single part / individual part

Zone #s on A/C blueprints are used to

Locate parts, sections and views on large drawings

A simple way to find the center of a circle on a sketch / drawing or a circular piece of material is

Draw 2 non-parallel chord lines across the circle and then a corresponding perpendicular bisector lines across each chord line

Which electrical diagram are images of components used instead of conventional electrical symbols'?

A pictorial diagram

Orthographic projections shows mostly

1 view, 2 view and 3 view drawings

On occasion a mechanic may need to make a simple sketch of a

Proposed repair, new design or a modification.

Sketches are made easier with

Graph paper

The drawings used in IPC’s are called

Exploded view drawings

Working drawings are in 3 classes, they are

Detail, assembly and installation drawings

A sketch must show…..

All the info to manufacture the part

What material symbol is used in drawing to represent all metals?

Cast iron

AN fittings have an identifying shoulder…..

Between the end of threads & the flare cone

What tubing has the properties (high strength, abrasion resistance) necessary for use in a high pressure (3000 psi) hydraulic system for operation of landing gear and flaps?

Corrosion-resistance steel annealed or 1/4H

Cold flow is generally associated with

Impressions left in natural / synthetic rubber hose material.

Flexible lines must be installed with

A slack of 5-8% of the length

Flexible hose used in A/C systems is classified in size according to….

Inside diameter

The small diameter of the flattened portion must not be less than 75% of the original…

Outside diameter

When flaring aluminum tubing for use w/ AN fittings, the flare angle must be….

37 degrees

A scratch / nick in aluminum tubing can be repaired provided it doesn’t not…

Appear in the heel of the bend

What is true regarding minimal allowable Bend radius for 1.5 inches OD Iameter or less aluminum alloy and steel tubing ofthe same size.

The minimum radius for steel is greater than for aluminum

What type of clamps are used for support When installing wiring?

Un-bonded

Magnetic particle inspection is used primarily to detect…

Flaws on or near the surface

A single dash on the head of a bolt Identifies it as a…

Corrosion resistant steel bolt

What logic gate provides an active high output only when all inputs are low?

NOR / Not or