How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Mr. Gregory White Your Own Question
Mr. Gregory White
Mr. Gregory White, Professor
Category: Homework
Satisfied Customers: 5240
Experience:  M.A., M.S. Education / Educational Administration
Type Your Homework Question Here...
Mr. Gregory White is online now
A new question is answered every 9 seconds

1. The ignition timing of an engine is expressed inA. inches

This answer was rated:

1. The ignition timing of an engine is expressed in
A. inches of crankshaft rotation. C. degrees of crankshaft rotation.
B. seconds of crankshaft rotation. D. volts produced by the ignition.

2. The points in a six-cylinder engine are opened and closed due to contact with the
A. six teeth on a distributor gear. C. rotor.
B. condenser. D. six lobes of a distributor cam.

3. In an electronic ignition system that contains a magnetic-pickup triggering device, the _______ is mounted on the distributor shaft.
A. pickup coil C. ignition condenser
B. trigger wheel D. ignition module

4. In a direct-fire ignition system that’s designed to fire two cylinders at the same time, one cylinder is fired at TDC on its compression stroke, and the other cylinder is fired at TDC on its
A. intake stroke. C. power stroke.
B. compression stroke. D. exhaust stroke.

5. The insulator of a typical spark plug is made of
A. soft plastic. C. porcelain.
B. oil-resistant fiberglass. D. tempered steel.

6. _______ is used to ensure that complete combustion occurs when engine rpms increase.
A. A cold-burning spark plug C. A coil
B. Spark advance D. A distributor lobe

7. When connecting spark plug wires to a distributor cap, the wires should be connected to the cap in
A. firing order. C. any random order.
B. reverse firing order. D. order from the shortest to the longest wire.

8. The function of the condenser in a point-type ignition system is to
A. delay the opening of the points. C. induce a voltage in the primary coil.
B. advance the engine timing at high rpms. D. prevent electricity from arcing across the points.

9. The length of the metal threads at the end of a spark plug is called the
A. reach. C. ground.
B. insulator. D. shell.

10. An eight-tooth armature can be found mounted to the
A. distributor shaft in an eight-cylinder engine. C. rotor assembly in a four-cylinder engine.
B. camshaft in an electronic ignition system. D. pickup coil.

11. In a conventional ignition system, the dwell increases as the
A. spark plug gap is decreased. C. point gap is increased.
B. spark plug gap is increased. D. point gap is decreased.

12. In a direct-fire ignition system, timing advance is set by the
A. pulse ring. C. point gap.
B. Hall-effect sensor. D. computer.

13. Which of the following triggering devices is used in a conventional ignition system?
A. Contact points C. Hall-effect switch
B. Magnetic pickup coil D. Optical triggering device

14. The dwell setting in an ignition system that contains an LED requires _______ periodic inspection.
A. no C. infrequent
B. annual D. 30,000-mile

15. In an ignition system without a distributor, _______ is determined by a computer.
A. point gap C. spark plug gap
B. plug reach D. spark timing

16. A component with spark towers placed every 45 degrees is a
A. faulty design as spark towers must be spaced every 90 degrees.
B. distributor shaft on an 8-cylinder engine.
C. rotor in a Hall-effect sensor-controlled ignition system.
D. distributor cap on an 8-cylinder engine.

17. Which of the following devices uses LEDs and photo diodes for ignition triggering?
A. Contact points C. Hall-effect switch
B. Magnetic pickup coil D. Optical triggering device

18. A _______ serves an important function by helping to identify crankshaft position during computer-controlled engine operation.
A. condenser C. pulse ring
B. centrifugal-advance system D. timing mark

19. _______ direct(s) current flow from the coil to individual plugs.
A. The condenser C. The rotor
B. The coil windings D. The distributor shaft

20. The lean air-and-fuel mixtures found in modern engines are usually fired by
A. advanced-spark distributors. C. retarded-spark distributors.
B. electronic ignition systems. D. cold-running spark plug wires.

21. In a conventional ignition system, when the contact points move apart,
A. the flow of current in the primary winding starts.
B. the primary winding’s magnetic field collapses.
C. current flows through the ignition coil.
D. current is discharged from the condenser.

You need to spend $3 to view this post. Add Funds to your account and buy credits.
Mr. Gregory White and 3 other Homework Specialists are ready to help you
Customer: replied 4 years ago.

Thank you so much that was really helped me check my answers. Greatly appreciated!