What would happen if all the propellers on a quadcopter rotated in the same direction?
A...
Engineering, 28.05.2020 05:01 cupcake3103670
What would happen if all the propellers on a quadcopter rotated in the same direction?
A. The quadcopter would spin because the net torque would not be zero.
B. The quadcopter performs a roll maneuver.
C. The front of the quadcopter would pitch up or down.
D. If all the propellers rotated clockwise, then the quadcopter would spin clockwise as well.
Answers: 2
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Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.
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Engineering, 04.07.2019 19:20
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