Which gear is used for connecting two coplanar and intersecting shafts? Bevel gear Spur gear None of these Helical gear TRUE ANSWER : ? YOUR ANSWER : ?
In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. This method will All of these Cause withdrawing or throttling of steam Reduce length of effective stroke of piston Reduce maximum opening of port to steam TRUE ANSWER : ? YOUR ANSWER : ?
In a multiple V-belt drive, if one of the belts is broken, then we should replace All the belts None of these The broken belt and the belts on either side of it The broken belt only TRUE ANSWER : ? YOUR ANSWER : ?
In a reciprocating steam engine, which of the following forms a kinematic link? Piston rod and connecting rod Cylinder and piston Crankshaft and flywheel Flywheel and engine frame TRUE ANSWER : ? YOUR ANSWER : ?
The motion between a pair which takes place in ____ is known as incompletely constrained motion. One direction only Two directions only None of the listed here More than one direction TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following is an exact straight line mechanism using lower pairs? Watt’s mechanism Peaucellier’s mechanism Grasshopper mechanism Robert’s mechanism TRUE ANSWER : ? YOUR ANSWER : ?
A disturbing mass m₁ attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii of rotation of m₁ and m₂ respectively) m₁ r₂ = m₂ r₁ m₁ m₂ = r₁ r₂ None of these m₁ r₁ = m₂ r₂ TRUE ANSWER : ? YOUR ANSWER : ?
To obviate axial thrust, following gear drive is used Double helical gears having opposite teeth Double helical gears having identical teeth Single helical gear in which one of the teeth of helix angle a is more Mutter gears TRUE ANSWER : ? YOUR ANSWER : ?
In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to Minimize the effect of primary forces Minimize the effect of secondary forces To start the locomotive quickly Have perfect balancing TRUE ANSWER : ? YOUR ANSWER : ?
Kinematic pairs are those which have Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Two elements that permit relative motion Elements of pairs not held together mechanically TRUE ANSWER : ? YOUR ANSWER : ?