QUES: Currents induced into this winding provide the rotor magnetic field. The shape of the rotor bars determines the speed-torque characteristics. At low speeds, the current induced in the squirrel cage is nearly at line frequency and tends to be in the outer parts of the rotor cage. As the motor accelerates, the slip frequency becomes lower, and more current is in the interior of the winding. By shaping the bars to change the resistance of the winding portions in the interior and outer parts of the cage, effectively a variable resistance is inserted in the rotor circuit. However, the majority of such motors have uniform bars.

What doesn't determine the properties of speed and torque?
What is the answer?
ANS: unanswerable
QUES: Gellius says that in his day humanitas is commonly used as a synonym for philanthropy or kindness and benevolence toward one's fellow human being. Gellius maintains that this common usage is wrong, and that model writers of Latin, such as Cicero and others, used the word only to mean what we might call "humane" or "polite" learning, or the Greek equivalent Paideia. Gellius became a favorite author in the Italian Renaissance, and, in fifteenth-century Italy, teachers and scholars of philosophy, poetry, and rhetoric were called and called themselves "humanists". Modern scholars, however, point out that Cicero (106 43 BCE), who was most responsible for defining and popularizing the term humanitas, in fact frequently used the word in both senses, as did his near contemporaries. For Cicero, a lawyer, what most distinguished humans from brutes was speech, which, allied to reason, could (and should) enable them to settle disputes and live together in concord and harmony under the rule of law. Thus humanitas included two meanings from the outset and these continue in the modern derivative, humanism, which even today can refer to both humanitarian benevolence and to scholarship.

What is the characteristic that most indicates why humans are the same as robots?
What is the answer?
ANS: unanswerable
QUES: Infrared radiation is used in industrial, scientific, and medical applications. Night-vision devices using active near-infrared illumination allow people or animals to be observed without the observer being detected. Infrared astronomy uses sensor-equipped telescopes to penetrate dusty regions of space, such as molecular clouds; detect objects such as planets, and to view highly red-shifted objects from the early days of the universe. Infrared thermal-imaging cameras are used to detect heat loss in insulated systems, to observe changing blood flow in the skin, and to detect overheating of electrical apparatus.

What technology allows infrared thermal imaging cameras to observe people or animals without being detected?
What is the answer?
ANS:
unanswerable