You Are On Multi Choice Question Bank SET 1327
66351. The electrical energy consumed by a coil is stored in the form of:
66352. What is magnetic flux?
66353. As current travels within a conductor:
66354. What type of device consists of a coil with a moveable iron core?
66355. What is hysteresis?
66356. One of DeMorgan's theorems states that . Simply stated, this means that logically there is no difference between:
66357. Subtraction is commutative.
66358. The Boolean expression for a three-input AND gate is Y = A B + C.
66359. According to the commutative law, in ORing and ANDing of two variables, the order in which the variables are ORed or ANDed makes no difference.
66360. is the algebraic expression for the duality theorem.
66361. The associative law of addition states that A + (B + C) = (A + B) + C.
66362. The sum-of-products form is a Boolean expression that describes the ANDing of two or more OR functions.
66363. The double-inversion rule states that if a variable is inverted twice, then the variable will be back to its original state.
66364. Each "1" entry in a K-map square represents ______________.
66365. One reason for using the sum-of-products form is that it can be implemented using all ______ gates without much alteration.
66366. The application of Boolean algebra to the solution of digital logic circuits was first explored by ________ of ________.
66367. A Karnaugh map will ____________________.
66368. The observation that a bubbled input OR gate is interchangeable with a bubbled output AND gate is referred to as:
66369. Exclusive-OR (XOR) logic gates can be constructed from what other logic gates?
66370. What input values will cause an AND logic gate to produce a HIGH output?
66371. The output of an exclusive-OR (XOR) gate is 1 only when the inputs are different.
66372. If the output of a gate is OFF when the inputs are the same, and ON when they are different, the gate must be an exclusive-OR.
66373. The output of a NAND gate is the same as the inverted output of an AND gate.
66374. Logic gate circuits contain predictable gate functions that open their outputs.
66375. If both inputs are required to be ON for the output to be ON, the gate must be an AND gate.
66376. The exclusive-NOR (XNOR) gate is simply an OR gate followed by a NOT gate.
66377. A logic circuit whose output is LOW when at least one input is HIGH is a(n) _________ gate.
66378. The AND function can be used to ___________ and the OR function can be used to _____________.
66379. The dependency notation " 1" inside a block stands for the ________ operation.
66380. If we use an AND gate to inhibit a signal from passing, one of the inputs must be _________.
66381. The output will be a LOW for any case when one or more inputs are zero in a(n):
66382. A single transistor can be used to build which of the following digital logic gates?
66383. How many NAND circuits are contained in a 7400 NAND IC?
66384. The Hall effect
66385. "Series" and "parallel" as applied to dc motors refer to
66386. The component that produces power in an electromagnetic generator is called the
66387. What is the magnetomotive force in a 150-turn coil of wire with 2 A flowing through it?
66388. A Hall effect sensor
66389. Which electromagnetic device has a flexible cone?
66390. What is the reluctance of a material that has a length of 0.045 m, a cross-sectional area of 0.015 m2, and a permeability of 2500 µWb/At·m?
66391. The unit of flux density is known as
66392. What do you call the characteristic of a magnetic material whereby a change in magnetization lags the application of a magnetizing force?
66393. Which electromagnetic device has a movable iron core called a plunger?
66394. Which electromagnetic device contains an armature?
66395. The polarity of induced voltage while a field is collapsing is
66396. The unit of magnetic flux density is the weber.
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66397. The ability of a material to maintain a magnetized state (without the presence of a magnetizing force) is called retentivity.
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