Regelquiz Stuttgart 13.01.2018

A high-tech engineering lab with diagrams, gears, and equipment related to mechanics and thermodynamics.

Regelquiz Stuttgart 2018

Test your engineering knowledge with our Regelquiz Stuttgart 2018! This quiz includes 10 challenging questions that span various engineering concepts, from mechanics to PCB design.

Multiple Choice and Checkbox questions
Real-world engineering applications
Understand the fundamentals of material properties and heat transfer

10 Questions2 MinutesCreated by CalculatingEagle425

The sheet metal below is made out of steel (?= 7860 kg/m3). Identify the x and y coordinates of the center of gravity and determine the weight of the sheet metal (Dimensions in mm)

X: 0,589 in, Y:1,233 in, W: 4,057 oz

X: 14,58mm, Y:33,22mm, W: 0,115 kg

X: 14,95mm, Y:31,23mm, W: 0,100 kg

X: 0,016 yd , Y: 0,034 yd, W: 0,018 st

X: 0,049 ft, Y: 0,103 ft, W: 4,571 oz

You want to transmit the max allowed battery energy per segment via CAN in [10^20eV] in Motorola Coding in a 32Bit Integer Offset=0, Faktor=1, Startbit=0. How would the data look like (in hex)? (example: 123ABCDEF)

0002F8AB

0005D6DB

0004AB3C

0005E52A

During benchmarking cars of the previous year engineer “A” sees how big the differences are concerning the pitch angles. He wonders how much acceleration is necessary, before the car’s front axle starts lifting. He does a rough calculation with the equation below and assumes on one hand a stiff car (no wheel travel through deflection) and on the other hand following vehicle data: m = 260kg; h_S=260mm; l_v=830mm; l=1570mm; g=9,81 m/s²

55,84

28,93

27,92

56,84

The following system of springs is given: What is the spring rate of the system if each spring has a spring rate of 1000 N/m. (e.q. 1234 N/m)

2546 N/m

5090 N/m

5092 N/m

2545 N/m

A refrigerated warehouse is surrounded by 70 sqm wall. This wall is made out of stone (1,30 W/(m2K)) 150mm thick and is isolated with a 10mm thick Isolation (0,05 W/(m2K)). The heat transfer†coefficient of the air is 25 W/(m2K). How high is the heat flow if the temperature of the refrigerator is -22∞C and the temperature of the air outside is 35∞C? (e.q. Q? =8075 W)

10091 W

10093 W

10092 W

10094 W

According to IPC 2221, how wide does your PCB internal trace have to be, when the Values are following: - Max Current: 2.75 A - Trace Thickness: 0.1 mm - Trace length: 25mm - Temp: Rise: 10 Celsius - Ambient Temp: 55 Celsius

1,2 mm

1,4mm

1,1mm

1,3mm

Which load can be applicated to a non-welded tube with an outside diameter of 25,4mm and a thickness of 2,5mm before it breaks?

3429,78 N

3428,77N

3428,78 N

3423,77 N

A spring is loaded with a 250 N equivalent mass. The current length of the spring is measured at 64mm. With a mass of 425 N the length of the spring is 44mm. Calculate the unloaded length in mm and round to 2 decimal places.

92,57

93,59

92,56

93,58

The Measurement of a damaged bevel gear with a shaft angle of 90˚ and the number of teeth z1 = 21 and z2 = 33 led to a tip diameter dae1 = 113,00mm and dae2 = 170,00mm. For the rebuilding of the gears the pitch angle ?1 and ?2 need to be calculated. (sum of both, without decimal)

A pneumatic shock absorber contains a cylinder (diameter = 250 mm, length = 500mm) which is closed by a plunger. The air within the cylinder has a temperature of 20 Degree and a pressure of 1 bar. What kinetic energy has a car if the plunger enters the cylinder by 400 mm within a crash? (in J, no decimal)

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Regelquiz Stuttgart 13.01.2018

Regelquiz Stuttgart 2018

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