On large heavy vehicles the parking or emergency brakes must be held on by something that cannot leak away such as
Air brake
Spring pressure
You might also like to view...
____________________ are ulcerations to the foot pads caused by the animal's body weight pressing down on the foot pads, which becomes irritated on wire cages
Fill in the blank(s) with correct word
The discus valve design is more efficient than a flapper valve design because ____.
A. it allows a compressor design with less clearance volume B. it operates with less spring tension C. the amount of expanded vapor in the cylinder is greater D. it will not allow liquid refrigerant in the cylinder
Compared to single-phase motors, three-phase motors are:
A) Stronger starting with a higher operating efficiency. B) More complicated and use more electricity. C) More common in small, fractional horsepower applications. D) More versatile because they can be operated on either single-phase or three-phase power.
When CMOS logic circuits are driving TTL logic circuits, any current mismatch problems can usually be overcome by the addition of:
A) a TTL tri-state inverting buffer between the stages. B) a CMOS inverting bilateral switch between the stages. C) a TTL tri-state noninverting buffer between the stages. D) a CMOS noninverting bilateral switch between the stages.