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Aerodynamics Quiz Number: 10 Course Name: Industrial Technology/Engineering Quiz N0. = 10 Teacher: E.Schmidt Teacher's Home Page: http://www.oocities.org/Baja/2140/ENG.htm Teacher's Email: schmidte@putnam.k12.il.us

Student Name: Student No:

No. of Questions= 21 ,Pass mark is - 70 %. You can press the Mark it button at the bottom of the page to have the quiz marked.

1.	If a fluid(liquid or gas) flows around an object at different speeds, the slower moving fluid will exert more pressure than the faster moving fluid on the object, this is known as the_______ Effect
	a)	Bernoulli
	b)	Indy
	c)	aero
	d)	wing
	e)	downforce
2.	The Indy car has a chasis in the shape of an upside down :
	a)	wedge
	b)	airfoil
	c)	flap
	d)	plane
	e)	hood
3.	_____ necessary in maintaning high speeds through the corners:
	a)	wide tires are
	b)	good brakes are
	c)	good steering is
	d)	downforce is
	e)	upforce is
4.	An Indy ground effect race car can reach speeds in excess of ____ mph using downforce
	a)	175
	b)	230
	c)	340
	d)	100
	e)	200
5.	Teams that plan on staying competitive use track testing and __________ to develope the most aerodynamic design:
	a)	lots of drivers
	b)	nitro
	c)	money
	d)	good oil
	e)	wind tunnels
6.	Aerodynamic improvements in _______ are directed at generating downforce on the race car with a minimum of drag:
	a)	tires
	b)	hoods
	c)	fenders
	d)	roofs
	e)	wings
7.	A high downforce package is necessary to maintain speeds in the corners and to reduce wear on the:
	a)	tires
	b)	brakes
	c)	gears
	d)	axels
	e)	bearings
8.	Drag force is proportional to the square of the:
	a)	temperature
	b)	track angle
	c)	humidity
	d)	speed
	e)	horse power
9.	A race car traveling at 200 mph can generate downforce that is approximately____ its own weight:
	a)	3 times
	b)	4 times
	c)	2 times
	d)	6 times
	e)	99 times
10.	Generating the necessary downforce is concentrated in three specific areas, which of these is one of them:
	a)	tires
	b)	roof
	c)	chasis
	d)	fenders
	e)	under carriage
11.	The study of the motion of gas on objects and the forces created is known as:
	a)	gasology
	b)	aerodynamics
	c)	wing dynamics
	d)	air flow
	e)	telemetry
12.	Is made of plastic resin, heat, vaccum or pressure, is strong and light:
	a)	kevlar
	b)	racing cloth
	c)	fiber glass
	d)	carbon fiber
	e)	polyester
13.	CFD stands for:
	a)	computer flight data
	b)	computational fluid dynamics
	c)	coefficient flow dynamics
	d)	computer fluid density
	e)	compact fender dyno
14.	The force acting on an object in motion, is produced by friction:
	a)	lift
	b)	gravity
	c)	thrust
	d)	propelling
	e)	drag
15.	If air or a fluid is moving in smooth layers around the object, this is called ____ flow:
	a)	drag
	b)	vertical
	c)	horizontal
	d)	laminar
	e)	reactive
16.	The upward reaction of an aircraft to the flow of air:
	a)	drag
	b)	lift
	c)	thrust
	d)	gravity
	e)	propelling
17.	An electronic device which transmits specific data to a remote site:
	a)	sending unit
	b)	antenna
	c)	laser
	d)	diode
	e)	telemetry
18.	When the fluid streamlines break into eddies and complex changing patterns this is known as_______ airflow:
	a)	smooth
	b)	turbulent
	c)	swirling
	d)	vortexing
	e)	tornadic
19.	When fluid speed increases when it forced through a narrow or restricted area, this is called the ______ effect:
	a)	venturi
	b)	Bernoulli
	c)	wind tunnel
	d)	aerowing
	e)	fluid-force
20.	When a fluid rotates around its own center this is called:
	a)	tornadic
	b)	swirling
	c)	flow
	d)	vortex
	e)	flushing
21.	A tube like structure where wind is produced usually by a large fan to flow over test objects:
	a)	wind ram
	b)	wind tunnel
	c)	vortex chamber
	d)	venturi
	e)	pressure cylinder

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