The train value of a gear train is Reciprocal of velocity ratio of a gear train Equal to velocity ratio of a gear train Always greater than unity Always less than unity TRUE ANSWER : ? YOUR ANSWER : ?
The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is l = 2p - 4 l = 2p - 5 l = 2p - 3 l = 2p - 2 TRUE ANSWER : ? YOUR ANSWER : ?
The secondary unbalanced force is maximum __________ in one revolution of the crank. Sixteen times Two times Eight times Four times TRUE ANSWER : ? YOUR ANSWER : ?
The Coriolis component of acceleration leads the sliding velocity by 135° 90° 45° 180° TRUE ANSWER : ? YOUR ANSWER : ?
When a slider moves on a fixed link having curved surface, their instantaneous centre lies At the pin joint At the centre of curvature At the centre of circle On their point of contact TRUE ANSWER : ? YOUR ANSWER : ?
The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank) m.ω².r sinθ m.ω².r cosθ m.ω².r (sin 2θ/n) m.ω².r (cos 2θ/n) TRUE ANSWER : ? YOUR ANSWER : ?
When the sleeve of a Porter governor moves upwards, the governor speed Decreases Remain unaffected First increases and then decreases Increases TRUE ANSWER : ? YOUR ANSWER : ?
To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use? Worm gear Spur gear Spiral gear Bevel gear TRUE ANSWER : ? YOUR ANSWER : ?
The Coriolis component of acceleration acts Along the sliding surface At 45° to the sliding surface Perpendicular to the sliding surface Parallel to the sliding surface TRUE ANSWER : ? YOUR ANSWER : ?
The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 45° - φ/2 α = 90° + φ α = 90° - φ α = 45° + φ/2 TRUE ANSWER : ? YOUR ANSWER : ?