To avoid exerting excessive pressure on walls when backfilling, _____.
a. apply the fill in thin layers
b. soak the fill material before compacting
c. use only gravel or crushed concrete as fill material
d. avoid using wet material
d. avoid using wet material
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Square waves are full of ____.
a. phase distortion b. amplitude distortion c. frequency distortion d. harmonic distortion
Describe shape as a design element.
What will be an ideal response?
On newer engines the designers try to place the top piston ring as close to the top of the piston as possible. The reason for this is ________
A) To reduce the cost of the piston B) To raise the compression ratio C) To protect the second piston ring D) To reduce HC emissions
The diaphragm _______ returns the diaphragm and power piston to the unapplied position when brakes are released?
A. residual vacuum B. residual atmospheric pressure C. return spring D. tension