Chapter 9 Hand Tools
Review Questions

Why are wrenches offset 15 degrees?

What are the other names for a line wrench?

What are the standard automotive drive sizes for sockets?

What type of screwdriver requires the use of a hammer or mallet?

What is inside a dead blow hammer?

What type of cutter is available in left and right cutters?

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.