Answer: The answer is D
D.In hydraulic systems, the operating temperatures must be kept between 170�F and 180°F
Explanation:
The operating temperature for hydraulic systems is 140°F and below. Anything above this temperature is too high and will reduce the useful life of hydraulic fluid.
Most often problems associated with hydraulic systems are caused by fluid contaminated with particulate matter.
Answer:
modulus of elasticity for the nonporous material is 340.74 GPa
Explanation:
given data
porosity = 303 GPa
modulus of elasticity = 6.0
solution
we get here modulus of elasticity for the nonporous material Eo that is
E = Eo (1 - 1.9P + 0.9P²) ...............1
put here value and we get Eo
303 = Eo ( 1 - 1.9(0.06) + 0.9(0.06)² )
solve it we get
Eo = 340.74 GPa
Answer:
The minimum diameter is 1.344 in
Explanation:
The angular speed of the driveshaft is equal to:
Where
N = rotational speed of the driveshaft = 2900 rpm
The torque in the driveshaft is equal to:
Where
P = power transmitted by the driveshaft = 134 hp = 73700 lb*ft/s
The minimum diameter is equal to:
Where
T = shear stress = 6100 psi
τ = 242.68 lb*ft = 2912.16 lb*in
