A hand reamer should be rotated backward to remove it from a hole
Indicate whether the statement is true or false
FALSE
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Define aquifer. Explain whether water in an aquifer is an exhaustible or nonexhaustible resource
What will be an ideal response?
On a domestic refrigerator equipped with a defrost cycle that depends on the run time of the compressor, what terminates the defrost cycle?
A. cooling thermostat B. compressor C. door switch D. defrost timer
The arc welding hand tool shown in the figure above is a _____
a. slag hammer
b. flux remover
c. chipping hammer
d. bead cleaner
Calculate the following:
A three-phase, 480 V, six-pole, Y-connected, 60 Hz, 10 kW induction motor is
driving a constant torque load of 60 Nm. The parameters of the motor are:
a. Motor torque.
b. Motor current
c. Starting torque
d. Starting current
A voltage is injected in the rotor circuit to reduce the motor speed by 40%.
e. Calculate the magnitude of the injected voltage.
f. Repeat (a) to (d) for the motor with injected voltage.
g. Calculate the power delivered to the source of injected voltage.
h. Determine the overall efficiency of the motor (ignore rotational and
core losses).