Creating electricity by exerting force on a crystal is called ________
A) Piezoelectricity B) Electrochemistry C) Photoelectricity D) Thermoelectricity
A
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Increasing returns to size can be:
A) Seen as the long run average cost curve turns up. B) Observed as the firm approaches the inelastic portion of its marginal cost curve. C) Ensures that it is profitable to expand irrespective of product price. D) None of the above
Some hybrid vehicles have used CVT or conventional automatic transmissions, but many other hybrids use a unique transmission known as an ECVT or electronically controlled continuously variable transmission. What is the difference?
What will be an ideal response?
In two weeks, 3 machinists assemble 30 machines. How many machinists are needed to assemble 100 machines in the same times?
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. In a wye connection, the line current and phase current are not the same. 2. Dual voltage motors not intended for wye-delta connection will have certain terminals tied internally. 3. Dual voltage motors designed for wye-delta starting will supply all 12 T leads at the terminal connection box. 4. Closed transition starting does not disconnect the motor from the power line. 5. Open transition starting means that the motor is connected to the power line during the transition from wye to delta.