What is an advantage of oblique pictorials?
What will be an ideal response?
An advantage of oblique pictorials is that one surface appears as its true size and shape and is not distorted. This means that circular features such as holes and cylinders appear as circles in the plane of the paper and do not appear as ellipses. Objects with cylinders and holes are easier to show in a pictorial representation when the drawing is an oblique pictorial.
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¿Por qué se necesitaría aislamiento en las tuberías de drenaje pluvial
a. Porque el agua del drenaje que corre por las tuberías podría generar condensación en ellas. b. Porque debe aislarse cada tubo del sistema de tuberías. c. Porque es necesario aislarlas de las inclemencias del tiempo. d. Para evitar la corrosión de la tubería.
The lifting capacity of a block and tackle is higher if it has _____.
a. more parts of line b. more hooks c. bigger hooks d. more shackles
Which of the following statements about battery ratings is true?
A. The ampere-hour rating is defined as the amount of steady current that a fully charged battery can supply for 1 hour at 80ºF (26.7ºC) without the cell voltage falling bellow a predetermined voltage. B. The cold cranking amperage rating represents the number of amps that a fully charged battery can deliver at 0ºF (-17.7ºC) for 30 seconds while maintaining a voltage above 9.6 volts for a 12 volt battery. C. The cranking amperage rating expresses the number of amperes a battery can deliver at 32ºF (0ºC) for 30 seconds and maintain at least 1.2 volts per cell. D. The reserve capacity rating expresses the number of amperes a fully charged battery at 80ºF can supply before the battery's voltage falls below 10.5 volts.
The amount of warpage in a type of wafer used in the manufacture of integrated circuits has mean 1.3 mm and standard deviation 0.1 mm. A random sample of 200 wafers is drawn.
a. What is the probability that the sample mean warpage exceeds 1.305 mm? b. Find the 25th percentile of the sample mean. c. How many wafers must be sampled so that the probability is 0.05 that the sample mean exceeds 1.305?