A PWM drive increases the voltage to the motor by __________ the number of pulses it produces during an alternation.
A. increasing
B. decreasing
Answer: B
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If you wanted to quickly increase the pH of a soil to 7.5 to combat a disease in cabbages you are about to plant, you should use hydrated lime rather than ground limestone
Indicate whether the statement is true or false
Stairs provide easy access between the floors of a building; one type, ____, have one 90-degree turn between elevations and the two sides pf the L are connected by a landing.
A. straight stairs B. L-shaped stairs C. double-L stairs D. U-shaped stairs
The National Fuel Gas Code category of vent system used with a natural draft furnace is _____
a. Category I b. Category II c. Category III d. Category IV
To perform a conversion from one type of source to another, a voltage source must have a resistor in parallel with it and a current source must have a resistor in series.
Indicate whether the statement is true or false.