Author Question: When using a torque wrench to tighten a circular compressor head: A) Set the wrench to 120 of the ... (Read 117 times)

Jipu 123 · **on:** Jul 24, 2018

When using a torque wrench to tighten a circular compressor head:

A) Set the wrench to 120 of the specification to allow for loosening.
B) Tighten the bolts in a clockwise pattern, working your way around the circle.
C) Apply a bead of silicone sealant to the gasket before starting
D) Tighten all the bolts to a lower torque, repeat with a slightly higher torque, and finally tighten all the bolts to the specified torque.

Question 2

What is the operating principle of glass stem thermometers?

A) The refractive properties of the glass stem change with temperature, making the fluid level appear higher at higher temperatures.
B) The fluid inside the thermometer boils as it is heated, causing the liquid level to rise.
C) The fluid climbs the walls of the tube through capillary attraction, which works better at higher temperatures.
D) Expansion and contraction of the fluid makes the liquid level rise and fall with temperature.