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ENGINEERING
COLLEGE
WHEN A CAR WITH BRIGHT HEADLIGHTS COMES TOWARD YOU AT NIGHT, YOU SHOULD:A. Move toward the right edge of your lane B. Look above the oncoming headlights C. Look below the oncoming headlights D. Look toward the right edge of your lane Help
ENGINEERING
COLLEGE
There are three homes being built, each with an identical deck on the back. Each deck is comprised of two separate areas. One area is 112.5 square feet, while the other is136,4 square feet. What is the total square footage of the decks for all three homos? Your answer should be to the nearest tonth of a square
ENGINEERING
COLLEGE
Which property of real numbers is shown below?3 + ((-5) + 6) = (3 + (-5)) + 6 commutative property of addition identity property of multiplication associative property of addition commutative property of multiplication
ENGINEERING
COLLEGE
The safety risks are the same for technicians who work on hybrid electric vehicles (HEVs) or EVs as those who work on conventional gasoline vehicles.
ENGINEERING
COLLEGE
The Clausius inequality expresses which of the following laws? i. Law of Conservation of Mass ii. Law of Conservation of Energy iii. First Law of Thermodynamics iv. Second Law of Thermodynamics
ENGINEERING
COLLEGE
In an adiabatic process, the temperature of the system remains constant. a)- True b)- False
ENGINEERING
COLLEGE
A test bottle containing just seeded dilution water has its DO level drop by 0.8 mg/L in a 5-day test. A 300 mL BOD bottle filled with 30 mL of wastewater and the rest with seeded dilution water experiences a drop of 7.3 mg/L in the same period (5-day). Calculate the BOD5 of the wastewater.
ENGINEERING
COLLEGE
Determine the degrees of superheat of steam at 101.325 kPa and 170°C. a. 50°C b. 70°C c. 60°C d. 80°C
ENGINEERING
COLLEGE
A 15. μF capacitor is connected to a 50. V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dielectric has a dielectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?
ENGINEERING
MIDDLE SCHOOL
Fuel and air is delivered to the engine throughOthe fuel tankO a fuel pumpOan intake manifoldOall of the above
ENGINEERING
COLLEGE
A 100-mm-diameter cast Iron shaft is acted upon by a 10 kN.m bending moment, a 8 kN.m torque, and a 150 kN axial force simultaneously. The ultimate tensile strength of the shaft material is 210 MPa, and the ultimate compressive strength of the shaft material is 750 MPa, determine the safety factor against failure for the above types of loading using a proper theory of failure.
ENGINEERING
COLLEGE
A certain solar energy collector produces a maximum temperature of 100°C. The energy is used in a cyclic heat engine that operates in a 10°C environment. What is the maximum thermal efficiency? What is it if the collector is redesigned to focus the incoming light to produce a maximum temperature of 300°C?
ENGINEERING
COLLEGE
Isothermal process also means adiabatic internal reversible process. a)-True b)-False
ENGINEERING
COLLEGE
Calculate the amount of power (in Watts) required to move an object weighing 762 N from point A to point B within 29 seconds. Distance between point A and point B is 5.0 meters and they are at the same level. (Ignore the frictional losses)
ENGINEERING
COLLEGE
What is the De Broglie wavelength of an electron under 150 V acceleration?
ENGINEERING
COLLEGE
The sports car has a weight of 4500-lb and a center of gravity at G. If it starts from rest it causes the rear wheels to slip as it accelerates. Determine how long it takes for it to reach a speed of 10 ft/s. Also, what are the normal reactions at each of the four wheels on the road? The coefficients of static and kinetic friction at the road are us=0.5 and uk=0.3, respectively. Neglect the mass of the wheels.
ENGINEERING
COLLEGE
If new research showed that the standard heights for crest vertical curve design were H1=3.0 ft and H2=1.5 ft, respectively, by what percent would the minimum length of curvature increase or decrease for a crest curve with a stopping sight distance of 500 ft and grades of +3% and -2%, respectively.
ENGINEERING
COLLEGE
Propane (C3H8) burns completely with 150% of theoretical air entering at 74°F, 1 atm, 50% relative humidity. The dry air component can be modeled as 21% O2 and 79% N2 on a molar basis. The combustion products leave at 1 atm. Determine the mole fraction of water in the products, in lbmol(water)/lbmol(products).
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