Lawnmower HS Area 18-19

A ___ ___ is a diesel engine component that preheats air inside the combustion chamber to facilitate ignition of the charge.

• reed valve

• spark plug

• heating coil

• glow plug

The system that maintains a desired engine speed regardless of the load applied to the engine.

• ignition system

• governor system

• electrical system

• fuel system

__ is the amount of electrical pressure in a circuit.

• wattage

• voltage

• amperage

• ohms

Mowers that have blades attached to a cylinder that rotates and pushes the leaves against a sharp bed knife are known as ___ mowers.

• rotary

• flail

• reel

• hammer-knife

Which of the following would not be a function of the fly-wheel?

• stabilizes crankshaft speed

• acts as a fan on some air-cooled engines

• transmit power

• responsible for timing

The order in which the piston rings are configured from top to bottom on the piston.

• compression, wiper, oil

• oil, wiper, and compression

• wiper, compression, oil

• combustion, wiper, compensation

The growth rate of turf does NOT depend on which of the following?

• environmental conditions

• degree of maintenance

• species/cultivars

• mowing frequency

The ___ ___ ___ is a system which uses force from moving air produced by rotating flywheel fins to sense engine speed.

• speed sensing device

• pneumatic governor system

• mechanical governor system

• static governor adjustment

The CPSC (Consumer Product Safety Commission) standard for blade stopping time mandates that rotary lawn equipment must stop within __ seconds of leaving the operator presence zone.

• 3

• 5

• 6

• 10

Based on CPSC (Consumer Product Safety Commission) standards, the maximum allowable blade tip speed for rotary lawn equipment is ___ fpm (feet per minute).

• 14,000

• 19,000

• 23,500

• 25,000