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GENERAL ORALS

CHAPTER 2 - PHYSICS

QuestionAnswer
DEFINE MATTER. ANY SUBSTANCE THAT OCCUPIES SPACE AND HAS MASS.
MATTER MAY EXIST IN WHAT THREE STATES? SOLID, LIQUID, AND GAS.
DEFINE KINETIC ENERGY. KINETIC ENERGY IS THE ENERGY OF MOTION.
"WORK" IS THE PRODUCT OF WHAT TWO FACTORS? FORCE AND DISTANCE MOVED WORK (W) X=FORCE (F) X DISTANCE MOVED (D) W = F X D
WHAT ARE THE PARTS OF A LEVER? A RIGID BAR AND A PIVOT POINT CALLED A FULCRUM.
A WHEEL BARROW IS AN EXAMPLE OF WHAT CLASS LEVER? A SECOND CLASS LEVER. (NOTE TO RETAIN ANSWER) TRY TO REMEMBER A WHEEL BARROW HAS TWO HANDLES / SECOND CLASS LEVER. THIS IS NOT WHAT MAKES IT A SECOND CLASS LEVER. JUST A WAY TO REMBER THE ANSWER.
ARE ALL THREE STATES OF MATTER AFFECTED BY THERMAL EXPANSION AND IF SO, WHICH STATE IS AFFECTED MOST? ALL THREE STATES ARE AFFECTED. GAS IS AFFECTED THE MOST.
WHAT IS A BRITISH THERMAL UNIT? THE AMOUNT OF HEAT ENERGY REQUIRED TO CHANGE THE TEMPERATURE OF ONE (1) POUND OF WATER ONE (1) DEGREE FAHRENHEIT.
NAME THE THREE METHODS OF HEAT TRANSFER. CONDUCTION, CONVECTION, AND RADIATION.
WHAT TERM DEFINES THE TEMPERATURE AT WHICH ALL MOLECULAR MOTION CEASES? ABSOLUTE ZERO.
CAN LIQUIDS BE COMPRESSED? NO, LIQUIDS ARE GENERALLY CONSIDERED INCOMPRESSIBLE.
WHAT ARE THE CUSTOMARY UNITS USED TO EXPRESS HYDRAULIC OR PNEUMATIC PRESSURE IN THE UNITED STATES? POUNDS PER SQUARE INCH. P.S.I.
DESCRIBE HOW PRESSURE IS TRANSMITTED WHEN A FORCE IS APPLIED TO A CONFINED LIQUID. PRESSURE IS TRANSMITTED EQUALLY IN ALL DIRECTIONS.
WHAT FORMULA EXPRESSES THE RELATIONSHIP BETWEEN FORCE, PRESSURE, AND AREA? FORCE (F) = AREA (A) X PRESSURE (P) F = A X P
WHAT IS THE APPROXIMATE SPEED OF SOUND AT SEA LEVEL ON A STANDARD DAY? 761 MPH OR 661 KNOTS OR 340 METERS PER SECOND
WHAT IS THE ATMOSPHERIC PRESSURE AT SEA LEVEL ON A STANDARD DAY? 29.92 INCHES OF MERCURY (HG) OR 1013.2 MILLIBARS.
ON A STANDARD DAY AT SEA LEVEL, WHAT IS THE VALUE FOR TEMPERATURE? 59 DEGREES FAHRENHEIT OR 15 DEGREES CELCIUS.
WHAT ARE THE FACTORS THAT DETERMINE DENSITY ALTITUDE? TEMPERATURE AND ATMOSPHERIC PRESSURE.
WHAT IS THE TERM USED TO DESCRIBE THE RATIO BETWEEN THE AMOUNT OF MOISTURE ACTUALLY PRESENT IN THE ATMOSPHERE AS COMPARED TO THE AMOUNT THE AIR COULD HOLD IF IT WERE COMPLETELY SATURATED? RELATIVE HUMIDITY.
WHAT ARE THE FOUR PRINCIPLES FORCES ACTING ON AN AIRPLANE IN FLIGHT? LIFT, DRAG, THRUST, AND GRAVITY.
WHAT IS THE TERM THAT DESCRIBES THE ANGLE BETWEEN THE RELATIVE WIND AND THE CHORD LINE OF AN AIRFOIL? THE ANGLE OF ATTACK.
WHAT ARE THE FACTORS THAT CAUSE AN AIRPLANE WING TO STALL? A STALL IS CAUSED WHEN THE ANGLE OF ATTACK (AOA) EXCEEDS A CRITICAL VALUE AND THE AIRFLOW SEPARATES FROM THE UPPER SURFACE AND BECOMES TURBULENT.
WHAT ARE THE PRINCIPLE EFFECTS THAT RESULT FROM LOWERING THE FLAPS WHILE IN FLIGHT? LIFT INCREASES, DRAG INCREASES, AND STALL SPEED DECREASES.
WHAT IS THE FUNCTION OF A WING MOUNTED VORTEX GENERATOR? TO DELAY OR KEEP AIRFLOW FROM SEPARATING FROM THE UPPER SURFACE OF A WING DURING HIGH SPEED FLIGHT.
HOW DOES BLADE-FLAPPING HELP TO COMPENSATE FOR DISSYMMETRY OF LIFT IN HELICOPTER MAIN ROTOR SYSTEMS? FLAPPING INCREASES THE ANGLE OF ATTACK (AOA) AND LIFT ON THE RETREATING BLADE AND DECREASES THE ANGLE OF ATTACK AND LIFT ON THE ADVANCING BLADE.
HOW DOES THE AIRFLOW THROUGH THE MAIN ROTOR OF A HELICOPTER CHANGE DURING THE TRANSITION FROM NORMAL FLIGHT TO AUTOROTATION? DURING NORMAL FLIGHT THE AIR MOVES DOWNWARDS AND DURING AUTOROTATION THE AIR MOVES UPWARDS.
WHAT IS FRICTION? THE OPPOSITION TO RELATIVE MOTION BETWEEN TWO OBJECTS IN CONTACT WITH EACH OTHER.
Created by: brookburns34924
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