A wheel is used to turn a valve stem on a water valve. If the wheel radius is 1 door and the axle radius is. 5 inches, what is the mechanical advantage of the wheel and axle?

Why is it reasonable to say that no system is 100% efficient?

Why does a BJT transistor require detailed calculations for its base resistor value to operate?

Shear strain can be expressed in units of either degrees or radians. a) True b) - False

A30-mm diameter 1035 HR steel (tensile strength 500 MPa) shaft is used to transmit a steady 1 kW of power rotating at 600 rpm. For a safety factor of 3.

Bridge A is the longest suspension bridge in a Country. Bridge B is 5555 feet shortershorter than Bridge A. If the length of Bridge A is m feet, express the length of Bridge B as an algebraic expression in m.

The diameter of a cylinder is called the a.) stroke b.) bore c.) principal length d.) radius

Consider the following grooves, each of width W, that have been machined from a solid block of material. (a) For each case obtain an expression for the view factor of the groove with respect to the surroundings outside the groove.

What is the last step to the design process? A: Define the problem B: Present solution C: Evaluate a solution D: Develop a solution

The controller can be considered the brain of closed loop system

What is the main role of matrix in composites! a) - to transfer stress to the other phases b) - to protect phases from environment c) - to reduce the hardness d) - to enhance ductility