Adventitious roots develop below the ground
Indicate whether the statement is true or false.
F
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Most large engines are cooled by a system that circulates liquid coolant through the engine
Indicate whether the statement is true or false
Calculate the following:
A three-phase, six-pole, Y-connected, 60 Hz, 480 V induction motor is driving a 300 Nm constant-torque load. The motor has rotational losses of 1 kW. The motor is driven by a slip energy recovery system. The triggering angle of the dc/ac converter is adjusted to 100o a. Motor speed b. Current in the dc link c. Rotor rms current d. Stator rms current e. Power returned back to the source
For the best working position, the work should be ________
A) At neck or head level B) At knee or ankle level C) Overhead by about one foot D) At chest or elbow level
With the engine cranking, a 4-volt drop is measured across the starter insulated (B+) battery cable. What should be done?
a. nothing, this voltage drop is acceptable. b. install a larger battery. c. replace the cable or clean and tighten the connection. d. charge the battery.