Q1: An ejector is used to

ANS:D - none of these

Increase pressure:

1. • An ejector is commonly used to increase the pressure of a fluid or gas stream.
   • It achieves this by utilizing the Venturi effect, which creates a low-pressure zone by accelerating a fluid through a constriction (the Venturi nozzle).
   • The low-pressure zone created by the Venturi effect allows the ejector to draw in and entrain another fluid (usually a gas or vapor) into the flow.
   • By mixing and entraining the two streams, the ejector increases the pressure of the combined fluid.
   • Ejectors find applications in various industries such as steam turbines, refrigeration systems, and vacuum systems where boosting the pressure of gases or vapors is required.
2. Increase temperature:
   • Ejectors are not typically used to increase the temperature of fluids or gases.
   • While the mixing process in an ejector may result in a slight increase in temperature due to energy transfer between the fluid streams, the primary function of an ejector is to increase pressure rather than temperature.
   • Increasing the temperature of a fluid or gas usually requires the addition of heat through processes such as heating coils, combustion, or heat exchangers, rather than the use of ejectors.
3. Remove condensate:
   • While ejectors can be used in systems where condensate removal is necessary, their primary function is not specifically to remove condensate.
   • Ejectors can assist in the removal of condensate by providing a means to draw in and entrain vapor or gas, thereby aiding in the evacuation of condensate from a system.
   • However, the removal of condensate is typically achieved through other means such as pumps, gravity drainage, or specialized condensate removal systems.
   • Therefore, while ejectors may indirectly contribute to condensate removal in certain applications, it is not their primary function.