Soal Pompa

What are the two main categories of pumps based on their working principle?

• a) Positive Displacement and Submersible

• b) Centrifugal and Diaphragm

• c) Reciprocating and Axial Flow

• d) Gear and Vane

Which of the following is a primary component of a centrifugal pump?

• a) Piston

• b) Impeller

• c) Diaphragm

• d) Plunger

What does NPSH stand for, and why is it important in pump operation?

• a) Net Pump System Head, measures pump efficiency

• b) Necessary Pump Speed Head, determines pump speed

• c) Net Positive Suction Head, prevents cavitation

• d) Non-Pressure System Head, measures pump pressure

What causes cavitation in pumps?

• a) Excessive vibration during pump operation

• b) Formation of bubbles in the liquid due to low pressure

• c) Increased pump efficiency

• d) Reduced pump speed

What is the difference between NPSHa (Available) and NPSHr (Required)?

• a) None above are correct

• b) NPSHa is the available head at the pump suction, and NPSHr is the required head to prevent cavitation

• c) NPSHa is the pump's efficiency, and NPSHr is the pump's power

• d) NPSHa is the pump's discharge pressure, and NPSHr is the pump's flow rate

What is the main role of an impeller in a centrifugal pump?

• a) To control the pump's flow rate

• b) To convert mechanical energy into kinetic energy

• c) To regulate the pump's suction head

• d) To measure the pump's efficiency

Why is it important for Ina, Dewi, and Titi to ensure the proper alignment of a centrifugal pump?

• a) To prevent excessive vibration during pump operation

• b) To increase the pump's flow rate

• c) To reduce the pump's discharge pressure

• d) To measure the pump's efficiency

What is the purpose of a volute casing in a centrifugal pump?

• a) To increase the pump's discharge pressure

• b) To convert kinetic energy into pressure energy

• c) To regulate the pump's flow rate

• d) To measure the pump's efficiency

Why is it important for Joko, Nur, and Surya to prime a centrifugal pump before operation?

• a) To prevent excessive vibration during pump operation

• b) To increase the pump's flow rate

• c) To remove air from the pump and create suction

• d) To measure the pump's efficiency

What is the purpose of a wear ring in a centrifugal pump?

• a) To prevent excessive vibration during pump operation

• b) To increase the pump's flow rate

• c) To maintain hydraulic efficiency and reduce internal recirculation

• d) To measure the pump's efficiency