Machine Design In order to obtain bolt of uniform strength Increase shank diameter Increase its length Tighten die bolt properly Drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread Increase shank diameter Increase its length Tighten die bolt properly Drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread ANSWER DOWNLOAD EXAMIANS APP
Machine Design When two springs are in series (having stiffness K), the equivalent stiffness will be 2K K/2 K/4 K 2K K/2 K/4 K ANSWER DOWNLOAD EXAMIANS APP
Machine Design The rolling contact bearings as compared to sliding contact bearings have Accuracy of shaft alignment Low starting and low running friction except at very high speeds All of these Small overall dimensions Accuracy of shaft alignment Low starting and low running friction except at very high speeds All of these Small overall dimensions ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the belt is transmitting maximum power, the belt speed should be(Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N)) √(Pmax / 3m) √(Pmax / 2m) √(Pmax / m) √(3m /Pmax) √(Pmax / 3m) √(Pmax / 2m) √(Pmax / m) √(3m /Pmax) ANSWER DOWNLOAD EXAMIANS APP
Machine Design A compound cylinder with inner radius 50 mm and outer radius 70 mm is made by shrinking one cylinder on to the other cylinder, the junction radius is 60 mm and the junction pressure is 1.1 N/mm². The maximum hoop stress developed in the inner cylinder is 7.2 N/mm² tension 7.2 N/mm² compression 3.6 N/mm² compression 3.6 N/mm² tension 7.2 N/mm² tension 7.2 N/mm² compression 3.6 N/mm² compression 3.6 N/mm² tension ANSWER DOWNLOAD EXAMIANS APP
Machine Design Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to 8W/9 W/2 2W/3 W/9 8W/9 W/2 2W/3 W/9 ANSWER DOWNLOAD EXAMIANS APP
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