Two technicians are discussing a power window that travels up and down very slowly. Technician A says that unwanted resistance in the wiring to the power window motor could cause this. Technician B says that a short to ground in the wiring to the motor could be the cause. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
A. Technician A only
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Consider a 20-cm-thick granite wall with a thermal conductivity of 2.79 W/m•K. The temperature of the left surface is held constant at 50°C, whereas the right face is exposed to a flow of 22°C air with a convection heat transfer coefficient of 15?W/m2•K. Neglecting heat transfer by radiation, find the right wall surface temperature and the heat flux through the wall.
Before removing the piston and rod assembly from the cylinder block, you should do all of these, EXCEPT ________
A) Make sure the rods are marked to their respective cylinders B) Remove the cylinder ridge with a ridge reamer C) Notch the top of the piston for identification D) Install rod bolt protectors
A commonly used sensor that induces an AC voltage by having a rotating reluctor cut through a permanent magnetic field is used for:
A. wheel speed sensors B. transmission tailshaft speed sensors C. engine speed sensors D. all of the above
A solar water heating system with an SEF of 2.5 costs $2,500.00 fully installed and operational. What is the payback period when compared to a conventional electric water heater with an EF of .90 that costs $275.00 installed? (12.03 = a constant for the average kWh/day of electricity used in electric water heaters and 12¢ = 2014 national average cost of electricity in kWh)
A) 8.42 years B) 2.78 years C) 6.67 years D) 10.38 years