Which of the following is true of shaded-pole motors?
a. They are small, inexpensive, and powerful.
b. They have a low starting torque, a low efficiency, and a high noise level.
c. They have a lower line current, are higher efficiency, and are very quiet.
d. They have a larger current, a lower total impedance, and a higher reacta
b. They have a low starting torque, a low efficiency, and a high noise level.
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When adjusting a mechanical modulator control linkage, how should the accelerator pedal be positioned?
A. fully released B. fully depressed C. disconnected D. against the gauge block
A monostable 555 timer is designed using the following external components: RA = 1.8 k?, C = 400 pF. What is the pulse width (tw) of the output?
A) 3.1 ms B) 1.14 ?s C) 2.4 ?s D) 0.79 ?s A) 940 ?s B) 84 ?s C) 900 ?s D) 880 ns
What types of environments are hydraulic or pneumatic grippers well suited to?
What will be an ideal response?
Ungrounded electrical systems are required to have a(n)____________________ that indicates whether any of the ungrounded conductors accidentally makes contact with grounded metal of the system or to the earth.
Fill in the blank(s) with the appropriate word(s).