Pretest Introduction to Engineering and Technology 10 Select the correct answer. Allen wants to measure the accurate diameter of various small parts of a machine. Which device can he use? O A digital micrometer OB. analytical balance O c. piezoelectric gauge OD. a charge-coupled device Reset Next​

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