An H-gate is used by a computer to reverse current flow in a load component that it controls. What does an H-gate consist of?
A. Two pairs of diodes
B. Two pairs of transistors
C. Two pairs of resistors
D. Two pairs of capacitors
Answer: B
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Which is the best estimate of the fugacity of liquid methanol at T = 298.15 K and P = 10 MPa, as calculated using only data in the Appendix of this book?
A. 137 kPa B. 191 kPa C. 197 kPa D. Over 10700kPa E. Not possible with only the appendix data.
Bacteria have developed immunity to some antibiotics
Indicate whether the statement is true or false
Eleven holes drilled around a circle are equally spaced. How many degrees, minutes, and seconds are between the centers of the holes? Express the answer to the nearest second.
A. 28 degrees 33 minutes 21 seconds B. 29 degrees 5 minutes 23 seconds C. 31 degrees 53 minutes 19 seconds D. 32 degrees 43 minutes 38 seconds
What is the relationship of current and voltage in a purely capacitive circuit?
A. The current lags the voltage by 90°. B. The current leads the voltage by 90°. C. The current and voltage are 180° out of phase with each other. D. The current and voltage are in phase with each other.