Technician A says that FM requires an antenna whereas AM may be heard from a radio without an antenna. Technician B says that speakers reproduce the original sound and their impedance can be different. Who is right?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
B
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Which of the following types of transformers must be installed in a vault?
a. 10kV dry-type transformers b. 5kV askarel-insulated transformers c. 15kV nonflammable fluid-insulated transformers d. 35kV oil-insulated transformers
The BC type fire extinguisher is designed to work on burning wood paper and cloth
a. true b. false
After the German invasion of the Soviet Union, what did the Soviets relocate to areas east of the Ural Mountains?
a. women and children b. military installations and equipment c. munitions and industrial factories d. farmers and farm equipment
Four resistors are connected in series across an 18 V source. Three resistors drop 0 V and one resistor drops 18 V. What's the trouble?
A) The three resistors are open. B) Two of the resistors are shorted. C) One resistor is open. D) There is no trouble; these voltages are normal.