In some older vehicles, a device called ________ located near the top of the windshield will drop into the driver's view when air pressure drops below 60 psi.
- a wig-wag ✓
- a big-bag
- a zig-zag
- a jig-jag
Answer: A. a wig-wag
The device is a wig-wag, a low-air warning that drops into the driver's view near the top of the windshield when air pressure falls below about 60 p.s.i.
Why this is the answer
The handbook describes a low-air warning device found on some older vehicles near the top of the windshield. It drops into the driver’s view when air pressure drops below approximately 60 p.s.i., and the handbook gives its name as a wig-wag. The same section says some retract automatically when pressure rises and others must be pushed back up. So the blank calls for the warning device’s name, not a general air-brake part.
Why the other answers are wrong
- B. a big-bag — A big-bag is not the warning device named in the handbook; the passage calls the dropping windshield-mounted device a wig-wag.
- C. a zig-zag — Zig-zag is not the term used in the passage for the low-air warning device that drops into view.
- D. a jig-jag — Jig-jag is not the name the handbook gives to the windshield-mounted low-air warning device.
Remember it
Link the name to the motion: a wig-wag drops into your view to get your attention when air pressure is low.