An Open-Tube Manometer Is Used to Measure the Gauge Pressure

question 85

Multiple Choice

An open-tube manometer is used to measure the gauge pressure in a tank.If the manometer is filled with mercury, and the open end is at a height of 15 cm above the end attached to the tank, what is the gauge pressure in the tank? The density of mercury is 14 x 10³ kg/m³.

• A)2.1 x 10³ Pa
• B)2.1 x 10⁴ Pa
• C)4.0 x 10⁴ Pa
• D)1.2 x 10⁵ Pa
• E)2.1 x 10⁶ Pa

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Definitions:

DC Common

A reference point in electrical circuits using direct current (DC), shared among components to return current, and ensure a common electrical potential.

Terminal 4

A specific connection or interface point, often marked as "4," within an electronic device or wiring system for securing or attaching a conductor.

PLCs

Specialized computers, known as Programmable Logic Controllers, are utilized for managing and controlling machines and processes in the industrial sector.

Relay-Type

Relay-Type control systems use electromechanical relays for switching operations in electrical circuits, offering physical isolation and power amplification.