What is the average net profit of small A/C and refrigeration companies?
a. 1% - 3% b. 5% - 10% c. 15% - 20% d. 25% - 33%
a. 1% - 3%
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The turbines in a hydroelectric plant are fed by water falling from a 50 m height. Assuming 91% efficiency for conversion of potential to electrical energy, and 8% loss of the resulting power in transmission, what is the mass flow rate of water required to power a 200 W light bulb?
What will be an ideal response?
Which hormone causes the muscles of the uterus to contract and force the fetus out?
a. Progesterone c. Oxytocin b. Adrenaline d. Estrogen
The main operating principle of transformers is:
A) Transductive voltage amplification. B) Transductive current amplification. C) Magnetic induction. D) Magnetic transformation.
Poor lighting, excessive noise, and inadequate guards for moving parts are examples of _____
A) acceptable risks B) unsafe conditions C) unavoidable hazards D) unsafe acts