Which of the following is not an example of heat generation? a) - Exothermic chemical reaction in a solid b) - Endothermic Chemical Reactions in a solid c) - Nuclear reaction in nuclear fuel rods d) - Electric resistance heater

Two previously undeformed cylindrical specimens of an alloy are to be strain hardened by reducing their cross-sectional areas (while maintaining their circular cross sections).

Ai r is compressed by a 30-kW compressor from P1 to P2. The air t emperature i s maintained constant at 25oC during thi s process as a result of heat t ransfer to the surroundings medium at 17oC. Determine the rate of entropy change of the air.

It is well known that the thermal efficiency of heat engines increases as the temperature of the energy source increases.

Where is a machinist most likely to work? school building farm office factory //I want to say factory?

Vitrification is a process of: a. Chemical reaction bonding of aggregate ceramic powder b. Cementing aggregate ceramic powder with a liquefied material c. Solid-state diffusion of aggregate ceramic powder d. Viscous flow formation of ceramics

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