What is the relationship between current and voltage in a purely resistive 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.
Answer: D
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Anytime a small RPA is flown in uncontrolled airspace the maximum altitude it is permitted to fly to is . . . . .
A. 200 feet AGL. B. 400 feet ASL. C. 400 feet AGL. D. 300 feet ASL.
Once the PM has been totally completed, the ____________________ should be retrieved from the plant engineer's office or the safety coordinator's office and brought to the machine.
Fill in the blank(s) with the appropriate word(s).
Change 12' 10" to inches.
Fill in the blank(s) with the appropriate word(s).
A motor with polar moment of inertia J develops torque according to the relationship T = a? + b. The motor drives a load defined by the torque–speed relationship TL = c?2 + d. If the four coefficients are all positive constants, determine the equilibrium speeds of the motor-load pair, and whether these speeds are stable.
Find: Equilibrium speeds and their stability. Assumptions: All coefficients of torque-speed curve functions are positive constants.