______________ are procedures put into place to limit employee exposure to hazards.
Fill in the blank(s) with the appropriate word(s).
Administrative controls
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Explain how President Roosevelt expected each of these New Deal efforts to aid in economic recovery from the Great Depression: a) the Civilian Conservation Corps (CCC), b) the Agricultural Adjustment Act (AAA), c) the Works Progress Administration (WPA), and d) the National Recovery Administration (NRA). Evaluate the level of success of each of these four New Deal initiatives in helping to provide recovery from the Great Depression.
What will be an ideal response?
The molecules of gases have:
A) The same levels of energy as solids and liquids when contained. B) Higher energy levels than solids or liquids. C) Lower levels of energy than solids or liquids due to molecular instability. D) Higher levels of energy than solids or liquids only when exposed to temperature changes.
Technician A says that HID headlamps convert about 80% of the electrical energy they consume into light energy. Technician B says that halogen lights use more energy but produce a 20% brighter beam than equivalent HID beams. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
The circuit shown in Figure P10.25 is a 9-V battery charger. The purpose of the Zener diode is to provide a constant voltage across resistor R2, such that the transistor will source a constant emitter (and therefore collector) current. Select the values of R2, R1, and VCC such that the battery will be charged with a constant 40-mA current.
Known quantities:
The circuit of Figure P10.25: IC = 40 mA; Transistor large signal parameters.
Find:
Design a constant-current battery charging circuit, that is, find the values of VCC, R1, R2 that will cause the transistor Q1 to act as a 40-mA constant current source.
Assumptions:
Assume that the transistor is forward biased. Use the large-signal model with ? = 100.