Final answer:
An employee certified to operate a forklift is not automatically certified to operate an incompatibles tractor; each requires its own training. High-voltage wires are held by insulating connectors but are not insulated themselves. The efficiency of a simple machine is always less than 100% because of energy lost to friction.
Step-by-step explanation:
Regarding your initial inquiry, it is false that an employee trained and certified to operate a Lift Truck (Forklift) is automatically allowed to operate an incompatibles tractor. Different types of equipment require specific training and certification to ensure the operator can handle the machinery safely and in compliance with occupational safety and health regulations.
On the matter of the high-voltage wires question, it is false that these wires are wrapped in an insulating material. High-voltage wires are indeed held aloft by insulating connectors, but the wires themselves are typically not insulated because the air acts as a natural insulator and the high placement keeps them away from conductive materials.
With respect to the efficiency of simple machines, the answer is true. The efficiency of a simple machine is always less than 100 percent due to the inevitable energy conversion to heat energy through friction.