Machine Design The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm) 1680 d 1420 d 2080 d 2840 d 1680 d 1420 d 2080 d 2840 d ANSWER DOWNLOAD EXAMIANS APP
Machine Design The velocity factor for ordinary cut gears operating at velocities up to 12.5 m/s is equal to 6/(6 + v) 4.5/(4.5 + v) 3/(3 + v) 0.75/(0.75 + √v) 6/(6 + v) 4.5/(4.5 + v) 3/(3 + v) 0.75/(0.75 + √v) ANSWER DOWNLOAD EXAMIANS APP
Machine Design Wahl's stress factor __________ very rapidly as the spring index decreases. Remain same Increases Decreases None of these Remain same Increases Decreases None of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to Unwin's formula, the relation between the diameter of rivet hole (d) and the thickness of plate (t) is given by (where d and t are in mm) d = 1.6√t d = 6√t d = √t d = 2√t d = 1.6√t d = 6√t d = √t d = 2√t ANSWER DOWNLOAD EXAMIANS APP
Machine Design Stress concentration is caused due to All of these Pitting at points or areas at which loads on a member are applied Abrupt change of section Variation in properties of material from point to point in a member All of these Pitting at points or areas at which loads on a member are applied Abrupt change of section Variation in properties of material from point to point in a member ANSWER DOWNLOAD EXAMIANS APP
Machine Design In a journal bearing, the load on the bearing is __________ to the axis of the journal. Parallel Perpendicular None of these Both A and B Parallel Perpendicular None of these Both A and B ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS