Standard Practices 3

A diagram representing many components in a simplified fashion?. Schematic diagram. Block diagram. Sectional diagram. Pictorial diagram.

What is the following symbol?. A field effect transistor with a P channel junction gate (JFET). A unijunction transistor (UJT). A phototransistor. A zener diode transistor.

What is the resistance in a 400Hz circuit with an inductance of 5 henry?. 50.2 Ω. 12,566.4 Ω. 3,141.6 Ω. 502.7 Ω.

What is the theoretical effect of a purely capacitive AC circuit?. The current leads the voltage by 180 degrees. The current lags the voltage by 180 degrees. The current lags the voltage by 90 degrees. The current leads the voltage by 90 degrees.

What is the theoretical effect of a purely inductive AC circuit?. The current leads the voltage by 90 degrees. The current lags the voltage by 90 degrees. The current lags the voltage by 180 degrees. The current leads the voltage by 180 degrees.

Which of the following is a duplex bearing?. i. ii. iii. iv.

A plastic using heat from a chemical reaction to harden and cannot be reshaped after curing is a form of a?. Cellulose acetate plastic. Acrylic plastic. Thermoplastic. Thermosetting plastic.

What is used to properly drill a hole in sheet metal?. a pilot hole and a twist drill. punch. drill press. impact drill.

The temperature to which unsaturated air must be cooled at constant pressure to become saturated is called the?. Dew point. Saturation point. Wet adiabatic lapse rate. Sublimation rate.

What is standard atmospheric pressure and temperature?. 29.92" Hg. and 59°F or 14.7psi and 15°C. 92.92" Hg. and 60°F or 16.7psi and 12°C. 29.92" Hg. and 65°F or 18.7psi and 16°C. 92.92" Hg. and 65°F or 18.7psi and 15°C.

What is relative humidity?. The actual amount of water vapour in the air. The temperature to which humid air must be cooled at constant pressure to become saturated. The expressed weight of water vapour per unit volume of air. The ratio of the actual water vapour in the air to the amount which the same volume of air would hold if it were saturated (at the same atmospheric pressure & temperature).

What is absolute humidity?. The actual amount of water vapour in the air. The temperature to which humid air must be cooled at constant pressure to become saturated. The ratio of the water vapour actually present in the atmosphere to the amount that would be present if the air were saturated at the prevailing temperature and pressure. The expressed weight of water vapour per unit volume of air.

Hydraulic fluids with a high flash-point are used because of its?. Low fire point, high viscosity and high chemical stability. Low fire point and its resistance to oxidation and deterioration over long periods of time. Resistance to combustion, Low degree of evaporation at elevated temperatures. Resistance to combustion, Low degree of evaporation at normal temperatures.

Water has contaminated a fuel tank full of avgas, which one will have a higher specific gravity?. Neither, they will mix together. Water and it will be at the top of the tank. Avgas. Water and it will be at the bottom of the tank.

What is the terminal colour for a 20 gauge wire?. Red. Green. Blue. Yellow.

During operation a transistor overheats excessively, what will happen to it?. Becomes damaged and burns open. The semiconductors will allow current flow to increase. Nothing, transistors are designed for extreme heat. Current will flow in both directions.

How many sides are visible in an isometric drawing?. 1 side. 2 sides. 3 sides. 4 sides.

On an isometric drawing, what kind of line is the following?. Phantom line. Hidden line. Extension line. Dimension line.

Where is the drawing title block usually placed?. Lower right-hand corner. Lower left-hand corner. upper left-hand corner. upper right-hand corner.

What is the composition of Monel?. 79% Chrome and 20% vanadium. 86% Nickel and 14% chromium. 62% Nickel and 29% copper. 68% Nickel and 29% copper.