What category of instruments does the text refer to as Analog Instruments?

• A. Digital Instruments
• B. Mechanical Instruments
• C. Flight Deck Instruments
• D. Stepper Instruments

Answer: (B)

Analog instruments refer to those that display information using varying physical quantities, typically utilizing dials, gauges, and hands to represent readings. Mechanical instruments fall under this category because they operate based on mechanical movements and physical properties. For example, they may use a needle that moves along a scale in response to changes in parameters such as altitude, airspeed, or engine performance.

Mechanical analog instruments typically rely on direct physical properties such as pressure, temperature, and other forces to generate readings. Their design and operation are based on mechanical principles, which often involve gears, levers, and other moving parts. This contrasts with digital instruments, which convert these physical quantities into digital readouts, often making them less intuitive in some operational scenarios.

Understanding the distinction between analog and other types of instruments, such as digital or stepper instruments, is essential for pilots and technicians, as it informs how they interpret readings during flight operations.