A hydraulic coupling
The hydraulic coupling is the simplest means of transmitting torque' hydraulically, it can be defined as a device in which a fluid, usually oil transmits torque from one shaft to another, producing an equal torque in the other shaft.
The condition when the speed of the driving and driven shafts are the same in hydraulic coupling is known as
Consider the following statements pertaining to fluid coupling:
1. Low viscosity fluids are preferred.
2. Increasing the density of fluid increases torque transmission at a given speed.
3. Fluid coupling are widely used in Automobiles, Aviation and Marine machinery.
Which of the above statements are valid?
Which of the following parts act as a reaction member and positioned in the middle of flow from the impeller and the runner in a torque converter
A torque converter consists of
(i) pump impeller connected machanicaliy to the driving shaft.
(ii) turbine runner connected to the driven shaft.
(iii) stator usually known as reaction member, positioned in the middle of the flow from the impeller and the runner. The stator has guide vanes which change the direction to the liquid impinging on the runner and thus causes the torque delivered to the driven shaft to be higher than that of driving shaft.
Hydraulic intensfier is a device used to
Which of the following statement is wrong?
A hydraulic system is a circuit in which power and forces are transmitted through a liquid. These can be classified in to hydrostatic system and hydrodynamic system. Which of the following is not an example of hydrostatic system?
Fluid coupling and torque converter are hydrodynamic system.
Hydraulic coupling belongs to the category of
Hydraulic coupling and torque converter are energy transfer machine, used to transmit the torque.
By which one of the following, a small quantity of water may be lifted to a great height
Hydraulic ram is used to lift small quantity of water to greater height from large quantities of water available at smaller heights.
A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. it is required to lift a mass of 1000 kg. The force required on plunger is nearly equal to