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Question: Air consumption for a 4-stroke SI engine is measured by means of a circular orifice of diameter 30 mm. The Cd for the orifice is 0.63 and the pressure across the orifice is 155 mm of water. The barometer reads 750 mm of Hg. Temperature of air in the room is 37oC. The piston displacement volume is 1780 cc. the compression ratio is 6.8. The fuel consumption is 8 kg/hr and having heating value of 43.6 MJ/kg. The BP developed at 2500 rpm is 28 kW. Determine,
(a) volumetric efficiency,
(b) air-fuel ratio,
(c) brake mep, and
(d) relative efficiency on the brake thermal efficiency basis.
3 amperes of current flow through a wire. What net charge flows past a point in the wire each second
An electron with kinetic energy 3.6 keV moves horizontally into aregion of space in which there is a downward-directed uniformelectric field of magnitude 11 kV/m.
An electron is suspended at a distance of 1.36 cm above a uniform line of charge. What is the linear charge density of the line of charge
A race car travels with a constant tangential speed of 82.4 m/s around a circular track of radius 645 m. Find the magnitude of the total acceleration
A web page designer creates an animation in which a dot on a computer screen has a position R=[4.0cm + (2.4cm/s^2)t^2(i)] + (5.5cm/s)t(j), Find the average velocity of the dot between t=0 and t=2
A wire is moving perpendicularly through a magnetic field of strength 0.100 T with speed 60.0 m/s. If the potential difference between the ends of the wire is 2.00 V, what is the length of the wire?
an electric field does 9.36 mev of work in moving a very small charged particle through a potential difference of
A flashlight on the bottom of a 4-m deep swimming pool sends a ray upward and at an angle so that the ray strikes the surface of the water 1.70-m from the point directly above the flashlight. What angle (in air) does the emerging ray make with wat..
A ball is dropped from the top of a building. In the absence of air resistance, the ball will hit the ground with a speed of 49 m/s. The height of the building is
An electron (charge 1.60×1019 C, mass 9.11×1031 kg) is in a uniform electric field of strength 543 N/C in the positive direction. What is the acceleration of the electron
When is building retrofitting a must? Choose a location on Earth and explain why building retrofitting may be the best way to go, what are the alternatives if retrofitting is not possible.
You have two springs. One has a greater spring constant than theother. You also have two objects, one with a greater mass than the other. Which object should be attached to which spring, so that the resulting spring-object system has the greatest ..
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