Exam (elaborations)
Auto Mechanics Final Exam Review
- Course
- Institution
Auto Mechanics Final Exam Review
[Show more]
Content preview
AUTO MECHANICS FINAL EXAMREVIEW QUESTIONS WITH VERIFIED
ANSWERS BY EXPERTS
nHow many rotations of the crankshaft are required to complete each stroke of the four stroke cycle? -
one half
Tech A says red brake warning lamp on the dash will light if there is a hydraulic failure - tech a
how many degrees of Camshaft rotations are need to complete the four stroke contr - 360
what gases are released from a battery when it is being charged - hydrogen and oxygen
the normal operating temp of an engine equipped with a 195 degree F thermostat is - 195-215 degree F
the higher the resistance of a load in a series circuit the __ the voltage drop across that load - more
normal oil pump pressure in an engine is __ PSI - 10-60
what two things can a vehicle computer actually perform - turn something on and off
Which component allow the rear wheels to turn at different speeds while propelling the vehicle? -
differential assembly
in an open circuit - no current will flow
one cylinder of an auto four stroke cycle engine complete a cycle every - 720 degree
a magnetic field is created in the __ in an alternator - rotor
which statement bellow is correct - turning off the low voltage primary coil induces a high voltage in the
secondary windings
master cylinder covers must be vented to - avoid creating a vacuum
if resistance is reduced in a series circuit, ___ current will flow - more
using ethanol enhanced or reformulated gasoline can result in reduced fuel economy - true
if the voltage increases in a circuit, what happens to the current if the resistance stays the same? -
increases
what frame design combines the body with the structure of the frame - unit body
stablizer - A
the sum of the voltage drops in a series circuit equals the ___ - source voltage
the ratio of the volume of cylinder with the piston at BDC to the volume of the cylinder with the piston
at TDC - pressure ratio
, electromotive force is another term for - voltage
tech A says that magnetic field is created in the alternator rotor - tech a
if 12 volts are being applied to a resistance 3 ohms, ___ amperes will flow - 4
tech A says that the diameter of the bolt is the same as the wrench size used to remove or install the
fastener. - neither
the ignition system is usually split into how many different sections - two
in this drawing of a radiator cap, what is occuring within the cooling system? - both a and c
the amperage in a series circuit is ___ - the same anywhere in the circuit
which mixture of coolant/water solution below is recommended in gen auto use? - 50/50
the brake pedal assembly uses a mechanical lever to - increase the driver's force on the brake pedal
applied to the master cylinder
the diameter of a cylinder is called the - bore
each cell of an auto 12 volt batter can produce about __ volts - 2.1
the inflation is very important to the safe and economical operation of any vehicle - both
most trucks and larger RWD vehicles use which type of frame - full frame
what is the gear ratio of this gear set? - 3 to 1
the starter motor rotates about ___ times faster than the engine - 18
how many ignition coils should you expect to find on a V4 engine using a waste spark system? - three
a normally aspirated auto engine loses about __ power per 1000 feet of altitude - 3%
which of these is also known as electrical potential - volts
an owner of a vehicle with ABS brakes complained that whenever he tried to stop on icy or slipper roads,
.. - tech a
if a 12 volt battery is connected to a series circuit with 3 resistors of 2 ohm, 4 ohm, and 6 ohms, how
much current - 1 amp
-
tech a says that the fuel pump relay is usually controlled by the PCM. - both
which circuit is failure is most likely to cause a fuse to flow - short to ground
which item is a computer output device - all of the above
rear brakes do less work during hard braking than the front brakes because - both b and c are correct
the upper radiator hose collapses when the engine cools. What's the cause? - a defective pressure cap
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller knowledgeNest. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now