In a potential transformer, the voltage across the secondary terminals is always _____.
a. higher than the primary voltage
b. lower than the primary voltage
c. higher than the source voltage
d. equal to the primary voltage
b. lower than the primary voltage
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A soil scientist analyzes and evaluates soils for construction sites, ponds and lake sites, erosion-control construction, and other conservation activities
Indicate whether the statement is true or false
Which of the following test instruments must be used only when the circuit in not energized?
a. Ammeter b. Ohmmeter c. Voltmeter d. Wattmeter
A compressor crankcase heater is used to:
A) Encourage refrigerant to return to the compressor crankcase for the next start up cycle. B) Keep the motor winding warm for improved energy efficiency. C) Prevent off cycle refrigerant migration to the compressor crankcase. D) Maintain the crankcase pressure above a vacuum.
How does one compute the center-to-center distance between worm and worm gear?
A. P × .3181 B. D + .636 × Pa C. Nworm gear/Dworm D. Dworm + Dworm gear/2