Which of the following safety devices delays application of front disc brakes in a disc/drum system until pressure is built up in the hydraulic system?
A. A pressure differential valve
B. A metering valve
C. A proportioning valve
D. A load proportioning valve (LPV)
B. A metering valve
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A diac does not conduct until a threshold ____ is reached.
A. inductance B. resistance C. current D. voltage
Floor systems of commercial buildings are of two types; one type, an ____, is made of poured-in-place concrete.
A. on-mark floor system B. on-grade floor system C. off-grade floor system D. off-mark floor system
Electro-hydraulic power steering systems use ________
A) A conventional hydraulic power steering gear B) An electric motor to power a hydraulic pump C) An engine-driven hydraulic power steering pump and an electric motor steering gear D) Both A and B
A signal with Fourier transform  figure 1.png)
is passed through a filter whose cutoff frequency is 2 rad/s (i.e., 0 < ? < 2). What fraction of the energy in the input signal is contained in the output signal?
What will be an ideal response?