A Tornado That Does Devastating Damage and Has Estimated Wind

question 17

Multiple Choice

A tornado that does devastating damage and has estimated wind speeds of 300 km/hr (186 mph) would be ranked as an:

• A) EF- 3.
• B) EF- 5.
• C) EF- 2.
• D) EF- 4.

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Definitions:

Label Instruction

A programmable logic controller instruction that assigns an alphanumeric designation to a particular location in a program. This location is used as the target of a jump, skip, or jump to subroutine instruction.

Logical True

An assertion or condition in logic that is considered to be true or affirmative in the context of boolean algebra.

Immediate I/O Instruction

An immediate I/O instruction in programmable logic controllers (PLCs) executes input or output operations instantly, bypassing the usual scan cycle sequence for real-time response.

Program

A set of instructions written in a programming language that is executed by a computer or control system to perform specific tasks or operations.