Which of the following situations will make a pump noisy? Select all that apply. O Excessive oil viscosity O Misalignment of pump and drive unit Dirty inlet strainer Chattering relief valve

Initially, the gas pressure is less than the outside atmospheric pressure.   When valve 1 is opened, while valve 2 remains closed, the fluid level h1  ______.   Question 10 options:   decreases   stays constant   increases

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The hydraulic system is free from noise and produces high pressure. Select one:TrueFalse     Hydraulic valves and their actuators are more in weight and can handle less amount of pressure. Select one:TrueFalse

Technician A says that excessive engine oil consumption can be caused by low oil levels. Technician B says that excessive oil consumption can be caused by worn valve guides. Who is correct?

Which of the following conditions will cause a pump to be noisy? O All of these conditions will cause a pump to be noisy O Excessive oil viscosity Dirty inlet strainer Air entering pump inlet O Misalignment of pump and drive unit

A.I) The term pressure drop refers to what in a hydraulic circuit a. The change in the flow rate in the hydraulic circuit b. The change in the fluid’s velocity in the circuit c. The pressure seen on the pressure gauge known as PG main d. The difference in pressure at the inlet of a component compared to the pressure at the outlet of the same component A.II) How are relief valve connected in a hydraulic circuit. a. In series with the pump b. In parallel with the pump c. In either series or parallel depends on the circuit d. Relief Valves are not connected to the pump

. If the speed of a centrifugal pump is doubled, its power consumption increases by ______ times a. No change c. Four b. Two d. Eight

What type of valve use simple discs, cones or balls are used in conjunction with simple valve seats to control flow

At the pump's shutoff head, the pump efficiency is maximum. O True O False