Mechanical Engineering Quiz # 31

What protects the female body half when disconnected from the male tip half?

DUST PLUG

NECK CLOTH

AIR HOCKEY STICK

CORD

SUSPENSION

What is the ratio of a pump's output to its input?

VOLUME

EFFICIENCY

POWER

How is the efficiency of a system usually expressed?

As a percentage

In watts

In BTU/hr

By the number of bits transmitted

What is a pump's volumetric efficiency?

Actual input/output

The actual output

The actual input flow

The percentage of the input that is output

Theoretical output

The escape, usually of gases, through a medium is called what?

IMPULSE

EFFUSION

CONDUCTION

CONDENSATION

SEPARATION

What is an example of an emission?

Particle

Heat

Gas

Liquid

Smoke

What do you do to rubber when it gets too hot?

Burn

Harden

Turn it off

Soften

What are examples of elastomers?

Butadiene rubber or neoprene

Natural rubber or thermoplastic

Styrene butadiene rubber

EPDM or polypropylene

Butyl rubber

What is the output of an electric motor measured in?

Amperes

Amps

Horsepower

Watts

What type of servo-valve is able to continuously control hydraulic output as a function of an electrical input?

MANUAL SERVO-VALVE

TRANSDUCER SERVO VALVE

ELECTRO-HYDRAULIC SERVO VALVE

PNEUMATIC SERVO-VALVE

In what way can a servo-valve control output as a function of input?

Automatically

At discrete intervals

Continuously

Discretely

What is a servo-valve capable of doing?

Continuously controlling hydraulic output as a function of an electrical input

Regulating hydraulic output in response to varying engine loads

Pulsatingly opening and closing to allow a fluid to pass

Opening and closing valves to control the flow of fluids

Providing variable pressure to a hydraulic system

What term refers to the increase in length expressed as a percentage of the original length?

Isochronicity

Shortening

Expansion

Shrinkage

Elongation

What is the increase in length expressed as a percentage of the original length?

QUARTER LENGTH

LENGTH

LONGATION

EXTENSION

HALF LENGTH

What type of additive promotes the formation of a stable mixture?

Polymer

EmULSIFIER

DIRECT ADDITIVE

Alkali

QUANTITY

An additive that promotes the formation of a stable mixture, or what?

Stirrup

Lye

Agitator

Emulsion

Dispersant

What does the term emulsion mean?

A dispersion of a substance in a liquid

Intimate mixture of oil and water

A mixture of two or more liquids that are not miscible

A mixture of two or more liquids

A thin film of one liquid over another

What is the general appearance of a emulsion?

Milky or cloudy

Droopy

Bubbly

Clear

Smooth

What prevents sliding metal surfaces from seizing?

Chemical inhibitor

Silicone

Polyurethane

Heat

Lubricant additive

What is the degradation of a surface resulting from a mixture of fluid and air or fluid and dirt particles occurring?

CONDENSATION

DESTRUCTION

COMPRESSION

EROSION

SUBSTANCE ADHESION

A passage or channel that is open to the atmosphere is called what?

EXHAUST LINE

AIR PURIFIER

AIR INLET

AIR CONDITIONER

WINDOW

What are exhaust lines normally used in systems that may be dispensed into the atmosphere?

Systems dispensing water

Systems using a gas-fired boiler

Systems dispensing oil or tar sands

Systems using water to create steam

Systems using pressurized air or gases

What is the commonly used term for exhaust line?

A system that helps remove pollutants from the air

A pipe that carries water, gas, oil or other fluid substances

A passage or channel that is open to the atmosphere

A pipe or tube used to convey gases, fluids, or other substances

A system of pipes or ducts used to convey air or heating currents

What can happen to a material when it suffers from fatigue?

Fracture

Failure

Heating

Shear

What does a closed loop system do to monitor feedback?

Part of a closed loop system which monitors performance

Part of a closed loop system which monitors input data

Part of a closed loop system which monitors back information

A closed loop system which monitors the air pressure in a room

A closed loop system which is used to control the temperature of a machine

Any closed circuit consisting of one or more forward elements and one or more feedback elements is called an what?

RELAY

CROSS-OVER LOOP

SWITCH

FEEDBACK LOOP

REVERBERATION LOOP

What device provides an access for filling?

PUMP

FILLER CAP

PAD

CAN

What is a FILLER CAP normally equipped with?

A nozzle to squirt ink

A microphone

A fine screen

A large print

A cap to close the valve

What are connectors or closures for fluid power lines and passages?

CONNECTORS

CLOSURES

CONNECTING CABLE

FITTING

What does a fitting close or connect to?

Hoses and conduits

Electrical wiring

Closed circuit television

Fluid power lines and passages

Electrical devices