The correct way to check for a leak in a hydraulic line under pressure is to _____.
a. visually inspect the line
b. run your hand along the line
c. use a piece of wood or cardboard
d. place your ear close to the line and listen for a hissing sound
c. use a piece of wood or cardboard
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A _____ grasps a tree and holds it while a circular saw cuts it off close to the ground
a. Chainsaw c. Cutting shear b. Felling head d. Processor
A hypothesis is a scientifically proven cause of a problem.
Answer the following statement true (T) or false (F)
Cast-iron cylinder sleeves are either cast into the aluminum block during manufacturing or pressed into the aluminum block. These sleeves are not in contact with the coolant passages and are called ________
A) Dry cylinder sleeves B) Aluminum sleeves C) Siamese cylinders D) Wet cylinder sleeves
The correct operating sequence for an induced draft 80% furnace is
A) inducer starts, igniter glows, gas valve opens, indoor fan starts B) indoor blower runs, inducer starts, gas valve opens, igniter glows C) igniter glows, gas valve opens, indoor blower runs, inducer runs D) igniter glows, gas valve opens, inducer starts, indoor blower runs