Which of the following is NOT true regarding LED-based height sensors?
A) The sensor uses a slotted disc B) The sensors generate a digital signal
C) The sensors use LEDs and a photo transistor D) All of these are true statements
B
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An autotransformer is one of the methods used to _____.
a. increase startup voltage b. increase startup current c. reduce startup current d. decrease winding resistance
The highest milk production occurs in the months of ____________________ and
____________________.
Fill in the blank(s) with the appropriate word(s).A tensile test was made on a tensile specimen, with a cylindrical gage section which had a diameter of 10 mm, and a length of 40 mm. After fracture, the length of the gage section was found to be 50 mm, the reduction in area 90 percent, and the load at fracture 1000 N. Compute:
(a) The specimen elongation. (b) The engineering fracture stress. (c) The true fracture stress, ignoring the correctyion for triaxiality at the neck. (d) The true strain at the neck.
The water make-up system takes its level measurement from the:
a. deaerator and steam generating drum b. economizer and deaerator c. mud drum d. superheated tubes