A heavy load has more inertia for the motor to overcome; therefore, ____ is required to build up the counter emf.
a. a longer time
b. more voltage
c. a shorter time
d. less voltage
a. a longer time
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A saturated mixture with a quality of 0.10 of R-134a is to expand in an insulated flexible container from a pressure of 1.00 MPa and a volume of 0.02 m3 until the pressure is 500 kPa and the quality if 0.5. Determine the final temperature and volume of the R-134a, and the work done in the process.
Given: R-134a; P1 = 1.0 MPa; x1 = 0.10; V1 = 0.02 m3; P2 = 500 kPa; x2 = 0.5. Assume: Q = 0 (insulated); ?KE = ?PE = 0 What will be an ideal response?
Technician A says that there are four basic tests to check compensator performance: low-pressure standby test, high-pressure stall test, margin pressure test, and torque limiter test. Technician B says that these tests are critical because they affect the variable pump performance between zero and maximum flow. Who is correct?
A. Technician A B. Technician B C. Both D. Neither
A thermistor is a device whose resistance is temperature sensitive
Indicate whether the statement is true or false
Two technicians are discussing magnetism. Technician A says that all magnetism is naturally occurring. Technician B says that all magnetism is created. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B