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POSTAL AUTOMOTIVE TECHNICIAN EXAM 944 ALREADY ANSWERED EXAM QUESTIONS AND 100% CORRECT ANSWERS
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What does carbon fouling of a spark plug indicate? - ANSWER-Too rich a mixture
If generator output is excessive even after disconnecting the F Terminal, where might the trouble be? - ANSWER-The generator
How does an automobile alternator convert alternating current to direct current?
What often causes hard starting? - ANSWER-Improper choke operation
A car with a history of burned points would likely indicate what problem with the voltage regulator? - ANSWER-Too high setting
What is the maximum allowable oversize amount when reconditioning brake drums? - ANSWER-.060 inches
Intake Stroke Air Fuel Mixture Measurement - ANSWER-Volumetric Efficiency
Purpose of Welch Plugs - ANSWER-Sand Removal After Casting
Two Cycle Engine Power Stroke Frequency - ANSWER-Revolution
Preignition Cause - ANSWER-Carbon Deposits
Outdoor Motor Propeller Size Units - ANSWER-Diameter and Pitch
The intake and exhaust openings on a two-stroke cycle engine are known as - ANSWER-Ports
Ball joint type front suspension eliminates - ANSWER-The conventional kingpin
Gasoline cannot be used in a diesel because - ANSWER-Gasoline will start to burn before the piston reaches the top of the stroke
On the compression stroke, a diesel engine compresses - ANSWER-Air
The idle and low-speed circuit in a carburetor is inoperative - ANSWER-At speeds over 20 mph
A generator should be polarized to prevent damage whenever - ANSWER-The generator or regulator wires have been disconnected
Turboprop engine is more efficient than turbojet engines for aircraft flying - ANSWER-Short trips
A blower or pump which forces air into cylinders at higher than atmospheric pressure is known as - ANSWER-Supercharger
The fuel pump is actuated by - ANSWER-Camshaft
A storage battery becomes so faded when - ANSWER-Batteries are discharged
The most common cause for excess tire wear on edges is - ANSWER- Underinflation
The correct order of piston rings above the piston pin is - ANSWER-Oil - oil - compression - compression
The voltage in the secondary of the ignition coil may reach - ANSWER-20,000 volts
False Statement about Flywheel - ANSWER-Joined to the Camshaft
Importance of Radiator Fan - ANSWER-During Idling
Main Difference Between Rockets and Jet Engines - ANSWER-Carry Own Oxygen
Optimal Spark Plug Firing Time for Maximum Power - ANSWER-Before Top Dead Center
Most Accurate Engine Timing Setting Tool - ANSWER-Dwell Meter
Normal Spark Plug Electrode Color - ANSWER-White to Yellow
Cam Angle Adjustment in Distributors - ANSWER-With Cap Left On
Cause of Soft Brake - ANSWER-Air in the Lines
Control of Towing by Adjusting - ANSWER-Tie Rod
The Purpose of a Turbocharger is to - ANSWER-Increase engine power by forcing more air into the combustion chamber
The Function of a Thermostat in an Engine is to - ANSWER-Regulate the engine temperature by controlling the flow of coolant
Icing Occurs Most Often - ANSWER-On Cool Damp Days
The Function of the Float in a Carburetor is to - ANSWER-Close the Needle Valve
To Improve Stability When Cornering, Manufacturers Added a Device to Cars Called - ANSWER-Stabilizer Bar
The Main Component of an Exhaust System is the - ANSWER-Muffler, which reduces noise produced by the engine
The Purpose of an Oil Filter in a Car is to - ANSWER-Remove contaminants and debris from the engine oil to prevent engine damage
The Vibration Damper on an Auto Engine is Fastened to the - ANSWER-Crankshaft
Most Small Gas Engines Use a _________ Ignition System - ANSWER-Magneto
What will leaking intake valve guides cause? - ANSWER-Excessive oil consumption
What generally causes flooding of a carburetor? - ANSWER-A stuck float needle valve
On many cars, what is the fuel pump combined with? - ANSWER-Vacuum pump
