1. When using power tools, never engage the

a. locking spring
b. booster
c. bit shank
d. trigger lock

2. Before replacing parts such as bits, blades, or discs on any tool, you must

a. polish it with fine steel wool
b. recharge the tool's battery
c. disconnect the power source
d. inspect them for cracks

3. Most hammer drills will not hammer until pressure is

a. released from the powder charge
b. reached in the hydraulic cylinder
c. detected at the trigger lock
d. applied to the drill bit

4. A pneumatic drill is commonly used

a. in areas where noise is a problem
b. to supply compressed air to de-burr pipes
c. when there is no source of electricity
d. for intricate detail work

When using power tools, you should never engage the trigger lock. Engaging the trigger lock can cause the tool to unexpectedly start or continue running, leading to accidents. Therefore, it is important to keep the trigger lock disengaged when using power tools.

Question 2:

Before replacing parts on any tool, such as bits, blades, or discs, it is crucial to disconnect the power source to ensure safety. Neglecting to disconnect the power source can result in accidental activation of the tool, leading to injuries.

Question 3:

Most hammer drills will not hammer until pressure is applied to the drill bit. These drills are designed to apply a hammering action when pressure is exerted on the drill bit, allowing for efficient drilling into hard materials. Pressure on other components, such as trigger locks or hydraulic cylinders, does not directly impact the hammering action of the drill.

Question 4:

A pneumatic drill is commonly used in areas where noise is a problem. Unlike electric drills, pneumatic drills operate using compressed air, which reduces noise levels. They are often preferred in noise-sensitive environments.

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