Which of the following transformers provides no direct connection between the windings and the only connection is the magnetic flux lines of the core?
A. Power
B. Isolation
C. Voltage
D. Current
B
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Answer the following statement(s) true (T) or false (F)
1. Basic hand tools are the common tools that are found in just about every workshop toolbox. 2. A die cuts “female” threads (equivalent to the threads in a nut). 3. Vernier calipers are more accurate than micrometers. 4. Accurate tightening of fasteners is a minor consideration in the proper operation of engines and other power equipment engine components. 5. A test light is used to determine if electrical power is available to a particular circuit.
Una caja se incluye en el NEC® como caja que contiene una cantidad máxima de ocho cables número 12. Si la caja tiene una abrazadera para cable y un receptáculo doble, _____ cable(s) se tendrá(n) que deducir del total permitido.
a. 1 b. 2 c. 3 d. 4
Particles on a plant's leaf surface reduce the plant's ability to absorb the light rays and moisture in the atmosphere
Indicate whether the statement is true or false
When selecting an evaporator for an air-conditioning system, the best way to ensure that the evaporator will work with the condenser is:
A) Manufactured by the same manufacturer as the condensing unit. B) Manufactured in the same year. C) The same nominal size in tons as the condensing unit. D) An AHRI match for the condensing unit.