# Engineering Review

15 cards

Engineering concepts of units and conversions.

Created Dec 1, 2010
by
wrighttheelder

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# Flashcard Set Preview

 Side A Side B 1 For the following dimensional equation, find the base dimensions of the parameter k. ML2 =... k = ML2 = LM-1t-1         LtM2 2 For the following dimensional equation, find the base dimensions of the parameter h. It-1h... h = It-1 = IN-1t-1       N 3 The power cord on an electric string trimmer carries a current of 5.2 A. How many milli- amperes... There are 103 mA and 106 uA in 1 A. Thus, 5.2 A = 5.2 × 103 mA = 5.2 × 106uA 4 Write the voltage 0.00255 V using the appropriate SI unit prefix. 0.00255V =2.55×103 V= 2.55mV 5 In the following list, various quantities are written using SI units incorrectly. Write the... 4.5 mW 8.75 MPa 200 J/s 20 W/m2 ￿K 3A 6 A rock (p = 2300 kg/m3) is suspended by a single rope. Assuming the rock to be spherical with... If the weight of the rope itself is neglected, the tension in the rope is equivalent to the... 7 A micro switch is an electrical switch that requires only a small force to operate it. If a... 0.25 oz × 1 lbf  × 1 N                ... 8 Standard incandescent light bulbs produce more heat than light. Assuming that a typical house... 0.9 × 20 × 60W × 3.4121Btu/h =             ... 9 A crane hoists a large pallet of materials from the ground to the top of a building. In hoisting... Power is defined as the rate of doing work. Thus, the units for power in the SI system are J/s,... 10 A highway sign is supported by two posts as shown. The sign is constructed of a high- density... The weight of the sign is W=mg= Vpg            = (2.5 m)(1.3... 11 The yield stress for structural steel is approximately 250 MPa. Convert this value to units of... 250 MPa × 145.04 psi = 3.63 × 104 psi           ... 12 The dimension moment, sometimes referred to as torque, is defined as a force multiplied by... The quantities work, energy and heat are also expressed in SI units of Nm. One newton- meter... 13 A spherical tank with a radius of 0.25 m is filled with water (p = 1000 kg/m3). Calculate the... The mass of the water is m = pV = p (4/3)pi•R3 = (1000 kg/m3)(4/3)pi(0.25 m)3 = 65.5... 14 A copper plate measuring 1.2 m × 0.8 m × 3 mm has a density of p = 8940 kg/m3. Find the mass... The mass of the plate is m= pV= p(LWH) = (8940 kg/m3)(1.2 m)(0.8 m)(0.003 m) = 25.75 kg The... 15 Use these to study for your test. I have an idea---------------------> Print them out as cards and know the formulas!