Davis steering gear consists of Rolling pairs Sliding pairs Higher pairs Turning pairs TRUE ANSWER : ? YOUR ANSWER : ?
The amplitude of vibration is always __________ the radius of the circle. Equal to Greater than None of these Less than TRUE ANSWER : ? YOUR ANSWER : ?
Which gear train is used for higher velocity ratios in a small space? Simple gear train Compound gear train Reverted gear train Epicyclic gear train TRUE ANSWER : ? YOUR ANSWER : ?
The unbalanced force due to revolving masses Varies in magnitude and direction both Constant in magnitude and direction both Varies in magnitude but constant in direction Varies in direction but constant in magnitude TRUE ANSWER : ? YOUR ANSWER : ?
The factor which affects the critical speed of a shaft is All of the listed here Span of shaft Eccentricity Diameter of disc TRUE ANSWER : ? YOUR ANSWER : ?
The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body) l₁l₂ = kG l₁ = kG l₁l₂ = kG² l₂ = kG TRUE ANSWER : ? YOUR ANSWER : ?
The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is (2/3).μ W cosec α (r₁ + r₂) (1/2). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2). μ W cosec α (r₁ + r₂) (2/3). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)] TRUE ANSWER : ? YOUR ANSWER : ?
If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach 360° 180° 90° 0° TRUE ANSWER : ? YOUR ANSWER : ?
The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be To lower the bow and stern To raise the stern and lower the bow To raise the bow and stern To raise the bow and lower the stern TRUE ANSWER : ? YOUR ANSWER : ?
In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction) P = W tan(α - φ) P = W tan(α + φ) P = W tan(φ - α) P = W cos(α + φ) TRUE ANSWER : ? YOUR ANSWER : ?