Core Knowledge and Fundamentals Flashcards

Which hand tool is specifically designed to tighten or loosen fasteners in confined spaces where a standard wrench cannot fit?

Answer: Crow's foot wrench

A crow's foot wrench attaches to a ratchet extension and can access fasteners in tight spaces where standard wrenches cannot reach.

In technical drawings, what does the abbreviation 'TYP' indicate?

Answer: Typical — the dimension applies to all similar features

TYP means 'typical' and indicates that the labeled dimension applies to all identical or similar features on the drawing.

What is the primary reason for using cutting fluid during machining operations?

Answer: To reduce heat and friction, extending tool life

Cutting fluid reduces heat generated by friction during machining, which extends tool life and improves surface finish quality.

When reading a vernier caliper, the main scale reads 1.2 cm and the vernier scale adds 0.03 cm. What is the measurement?

Answer: 1.23 cm

The total reading is the sum of the main scale and vernier scale readings: 1.2 cm + 0.03 cm = 1.23 cm.

What is the function of a breaker bar in a socket set?

Answer: To provide extra leverage for loosening tight fasteners

A breaker bar provides a long handle with no ratchet mechanism, giving maximum torque leverage to break loose seized fasteners.

Which type of blueprint view shows what a part looks like when cut along a specific plane to reveal internal features?

Answer: Section view

A section view cuts the part along a defined plane and reveals internal features that would otherwise be hidden.

In electrical safety, what does GFCI stand for and where is it commonly required?

Answer: Ground Fault Circuit Interrupter, required near water sources

A Ground Fault Circuit Interrupter detects current leakage to ground and quickly cuts power, and is required in wet locations like bathrooms and kitchens.