Question

question 6 (5 points)
listen
all of these are parts of the primary ignition circuit except
a) pickup coil.
b) spark plug wiring.
c) the ignition switch
d) the ignition module.
question 7 (5 points)
listen
which of these refers to an arbitrary scale devised jointly by the american petroleum institute and the national bureau of standards that expresses the gravity or density of liquid petroleum products?
a) grade number
b) hydrometer units
c) cetane number
d) api gravity
question 8 (5 points)

Explanation:

Question 6

The primary ignition circuit components include the pickup coil, ignition switch, and ignition module. Spark plug wiring is part of the secondary ignition circuit. So we identify the option that's not in the primary circuit.

API gravity is the scale developed by the American Petroleum Institute and National Bureau of Standards to measure the gravity/density of liquid petroleum products. Grade number is general, hydrometer units are for measurement tool, cetane number relates to diesel ignition quality.

Answer:

B) spark plug wiring

Question 7