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37 Cards in this Set
- Front
- Back
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A technician is performing a cylinder leakage test on an engine. The technician sees air bubbles in the radiator with the cap off. Which one is the most likely cause?
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CRACKED CYLINDER HEAD. (The high pressures developed in the combustion chamber can reach the coolant through the crack in the head and show up as air bubbles in the radiator as the coolant is circulated).
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Looking at a brake system with the drum off, the secondary brake shoe location is...
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...THE REAR SHOE (CLOSEST TO THE REAR). (The self-energizing effect of this type of brake system requires that the longer lined secondary shoe be in the rear part of that wheel's brake system).
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If a thermostat in a vehicle's engine is stuck open, the engine will...
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...NOT HEAT UP TO A PROPER TEMPERATURE. (The idea of a thermostat is to be in a closed position until a proper engine temperature is reached).
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relay
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AN ELECTRICAL DEVICE THAT USES LOW CURRENT TO CONTROL HIGH CURRENT.
(To control a higher current load with reduced length of large wiring, a relay is placed in the circuit). |
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What component is used to audibly indicate a worn brake pad condition to the driver?
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The scraping metal clip.
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A vehicle with front disc brakes and rear drum brakes has wheel cylinders on the rear wheels only because...
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...the front wheels have calipers that combine the function of a wheel cylinder and can also be an attaching component for the brake pads.
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Which of the following components is not part of the secondary of an ignition system?
A. spark plug wires B. rotor C. distributor cap D. pick-up coil |
D. pick-up coil (pick-up coil is part of the primary control circuit).
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A distributor with vacuum advance compensates for varying...
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...ENGINE LOADS.
(Because of the relationship between engine load (throttle position) and vacuum, some ignition systems use a vacuum advance retard unit to advance the spark proportionally to engine vacuum. This is a form of timing control). |
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In a computer-controlled ignition system, the ignition module...
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...TURNS ON AND OFF THE PRIMARY CURRENT. (The ignition module turns on and off the primary current based on a signal it gets from the computer.)
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A starting system includes components such as the starter, motor, solenoid, and/or relay. What do these components have in common?
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THEY USE THE PRINCIPLE OF ELECTROMAGNETISM.
(All three components use an electromagnetic field to perform work. In the motor, the electromagnetic field is used to turn the armature. In the solenoid, it is used to move a plunger, and in the relay it is used to move a set of contacts). |
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In an automotive electrical series circuit, what will be the effect of adding an additional resistance?
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REDUCTION OF THE CURRENT FLOW.
(A relationship exists between voltage, current flow, and resistance in a series circuit. If resistance is increased, current flow is reduced. If resistance is reduced, current flow will increase). |
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Extractor
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Extractors are used on bolts and screws that are typically broken off flush or below the surface.
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Tap
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A tap is a hard tool used for cutting internal threads.
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Veining bit
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A veining bit is used in a router to cut fine lines in material, often for decorative purposes.
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Corrugated fasteners
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Corrugated fasteners (one is shown below) are probably best to use to repair split wood, since they draw the edges of the wood together. A #10 screw would be too big. Nails and glue don't really support the corners.
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By whom would a monkey wrench usually be used?
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A plumber. (The large jaws and heavier weight of a monkey wrench are ideal for loosening and tightening large nuts and bolts that are usually encountered by plumbers).
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The use of what x-shaped method often used in framing and other rough construction projects to join wooden elements lends greater strength and holding power to joints?
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Toenailing
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To use a bit in a hand drill,
insert the ____ into the _____. |
tang, chuck.
(A tang is the end of the drill that is inserted into the chuck and tightened. The tang may be square for slower hand drills, and round for high-speed electric drills). |
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What is a countersink?
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A TYPE OF DRILL.
(A countersink is a bit with a cone-shaped cutting head, used to expand the top of a screw hole. This allows the head of the screw to lie flush with the material into which it is screwed). |
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What does a contour gauge measure?
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THE SIZE OF AN OBJECT.
(A contour gauge is used to measure and form an outline of an object. The gauge presses against the object, assumes its shape with dozens of little steel pins, and then is transferred to whatever you are cutting-wood, glass, metal, tile, and so on). |
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Burned engine bearings,
enlarged pistons, and melted engine parts can all be caused by what action concerning the engine? |
Overheating the engine.
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If an alternator overcharges the battery, what is a likely explanation?
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The voltage regulator isn't working properly.
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What is the purpose of the carburetor?
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The carburetor mixes fuel and air.
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To what do connecting rods connect the piston?
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The crankshaft.
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What is the purpose of the distributor?
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The purpose of the distributor is to distribute electricity to the spark plugs.
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What part has most likely malfunctioned if the ignition system, lights, and radio don't work?
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The battery.
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A gage shows the complete loss of oil pressure while driving. The best action would be to...
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...pull over immediately and investigate the problem.
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How does a positive-crankcase ventilation system control emissions?
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By forcing unburned/partially burned fuel back into the cylinder.
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What is the difference between a single-acting and an opposed piston engine?
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Single-acting piston engines have one piston per cylinder and opposed piston engines have two.
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What is limited-slip differential?
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A transfer of the most driving force to the wheel with the greatest amount of traction.
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What might occur if cold water is poured on an overheated engine?
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The engine block may crack.
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What might occur as the result of air in the hydraulic brake system?
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Soft brake-pedal movement.
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What is used to set nails below the surface of wood?
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Nail sets.
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A ripsaw cuts...
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...WITH the grain of the wood.
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What tool is generally used to drive bolts and chisels?
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A sledge.
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What is the purpose of a bucking bar?
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The purpose of a bucking bar is to drive rivets.
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What are washers that have teeth all around the circumference to prevent them from slipping called?
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Shakeproof washers.
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