Answer the following statement(s) true (T) or false (F)
1. The brush polarity in a separately excited generator cannot be changed by reversing the rotation of the armature or the direction of the field current.
2. If both the armature direction and the direction of the field current change, the brush polarity remains the same.
3. The magnitude of the voltage depends on the rate at which the flux is cut.
4. Field control of the output voltage is accomplished by varying the total resistance of the field circuit with a field rheostat.
5. Brush polarity changes when the field current is zero.
1. FALSE
2. TRUE
3. TRUE
4. TRUE
5. FALSE
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With the system operating, a technician gets a reading of 20 V between the L1 and T1 terminals at the contacts of the contactor. This tells the technician that:
A) The transformer is defective because the voltage should be 24 V. B) The compressor is defective. C) The contactor is operating correctly. D) The contacts are defective because they have a measurable voltage drop.
If a frame is 5/16 inch thick and the crossmember is 3/32 inch thick, what is the combined thickness in inches of both members?
A. 9/32 B. 11/32 C. 13/32 D. 15/32
An adjustable wrench is also called a(n) ____ wrench.
a. crescent b. cirrus c. arch d. bowed
When enlarging a pattern, a _____ of horizontal and vertical lines is drawn over the original pattern
a. grid c. group b. marker d. set