In the above figure, if the load increases and causes the motor to slow down, the voltage at the base of Q2 becomes more ____________________ (negative, positive), which causes Q3 to turn on ____________________ (less, harder), creating a more ____________________ (negative, positive) voltage at the base of Q1.
Fill in the blank(s) with the appropriate word(s).
positive, harder, positive
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IAQ problems resulting from the creation of negative pressure areas in a building due to insufficient outdoor makeup air may be corrected by _____.
a. making sure the outdoor dampers are set to the closed position b. gradually reducing the proportion of recirculated air being supplied c. properly balancing the building’s air supply and the exhaust system d. installing smaller boilers and chiller throughout the HVAC system
Residential buildings consume approximately ____% of the energy produced in the United States for heating, cooling, cooking, water heating, and operating electrical devices.
A. 5 B. 12 C. 17 D. 22
If your calculator displays 3.5 -06, the equivalent metric value is ________
A) 35 micro B) 3.5 pico C) 3.5 Meg D) 3.5 micro E) 35 milli
The depth of an object shown in a multiview print is common between ____.
A. the front view and the top view B. the front view and the right side view C. the top view and the right side view D. the rear view and the left side view E. the rear view and the bottom view