The frictional torque transmitted in a flat pivot bearing, considering uniform pressure, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)
(1/2) μ W R
(2/3) μ W R
(3/4) μ W R
μ W R
- 3.The retardation of a flat faced follower when it has contact at the apex of the nose of a circular…
- A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located…
- When the primary direct crank of a reciprocating engine makes an angle of θ with the line of stroke,…
- In which of the following type of gear train the first gear and the last gear are co-axial.
- The train value of a gear train is
- Which of the following statement is correct?
- The power from the engine to the rear axle of an automobile is transmitted by means of
- In a band and block brake, the ratio of tensions on tight side and slack side of the band is (where…
- When a slider moves on a fixed link having curved surface, their instantaneous centre lies
- When the two elements of a pair have a surface contact when relative motion takes place and the surface…
- A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied…
- The maximum efficiency of spiral gears is (where θ = Shaft angle, and φ = Friction angle)
- The cam follower generally used in aircraft engines is
- A shaft carrying three rotors will have
- The mechanism consisting of three turning pairs and one sliding pair, is called a
- In a screw jack, the effort required to lower the load W is given by
- The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given…
- The load cup of a screw jack is made separate from the head of the spindle to
- Which type of gear train is used in clock mechanism to join hour hand and minute hand?
- The maximum fluctuation of speed is the
- Klein's construction can be used when
- There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20,…
- In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient…
- Which of the following statement is correct for involute gears?
- In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation…
- In a differential band brake as shown in the below figure, if the length OB is greater than OA, then…
- The fundamental equation for correct steering is (where φ and α = Angle through which the…
- The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left…
- Module of a gear is
- Angle of action of cam is defined as the angle