FSG#109
1.What is the maximum efficiency of a class C amplifier?
a)100%
b)25%
c)50%
d)78.5%
2.In the engine system shown l =160 mm and b = 60 mm. Knowing that crankAB rotates with a constant angular velocity of 1000 rpm clockwise, determine the angular velocity of the connecting rod when θ=60deg.Answer rad/sec^2 with 1 decimal
3.Our vehicle completes the Acceleration Event with 4 seconds result. What is the velocity of the car when it crosses the finish line, if we assume that the acceleration is constant during the run?
a)120 (km/h)
b)105 (km/h)
c)135 (km/h)
d)30 (m/s)
4.A horizontal force of 26.3 N is necessary to push a 99 N wooden box across a tile floor at constant velocity. Find the coefficient of sliding friction between the two surfaces.Answer with 2 decimals
5.Which of the following bearing types is expected to have the most allowable axial displacement?
a)Angular contact
b)Deep groove
c)Thrust ball
d)Cylindrical roller
7.If the side impact structure is part of a composite structure, the following is required:
a)The vertical side impact structure must have an EI equivalent to two baseline steel tubes and half the horizontal floor must have an EI equivalent to one baseline steel tube.
b)The vertical side impact structure must have an absorbed energy equivalent to one baseline steel tubes.
c)The perimeter shear strength must be at least 1688 pounds
d)The vertical side impact structure must have an EI equivalent to one baseline steel tubes and half the horizontal floor must have an EI equivalent to two baseline steel tube.
8.Which of the following is the right use of a lag bolt:
a.Securing light poles, structural beams and to fasten equipment to concrete.
b.Structural applications such as fastening walls to concrete.
c.Connect heavy materials that are bearing extreme loads.
d.Fasten metal to wood.
e.Connect heavy materials that are carrying extreme loads
f.None of the above
g.All of the above
10.A digital-to-analog converter is an application of the
a)Scaling adder
b)Voltage-to-current converter
c)Non-inverting amplifier
d)Adjustable bandwidth circuit
11.A large-particle composite consisting of tungstenparticles within a copper matrix is to beprepared. If the volume fractions of tungstenand copper are 0.70 and 0.30, respectively, estimatethe upper limit for the specific stiffnessof this composite given the data that follow.
a)19.65 GPa
b)20.36 GPa
c)21.89 GPa
d)23.05 GPa
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