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You Are On Multi Choice Question Bank SET 1328
66401. Magnetic flux flows from the north pole to the south pole within the magnet.
(A): True (B): False
66402. The Hall voltage is the voltage created by a conductor moving through a magnetic field.
(A): True (B): False
66403. The ability of a material to maintain a magnetized state (without the presence of a magnetizing force) is called hysteresis.
(A): True (B): False
66404. Ferromagnetic materials have pre-existing magnetic fields.
(A): True (B): False
66405. The unit of magnetic flux is the weber.
(A): True (B): False
66406. A voltage is induced across a conductor if it remains absolutely stationary within a magnetic field.
(A): True (B): False
66407. When the south poles of two bar magnets are brought close together, there will be a force of attraction.
(A): True (B): False
66408. Which of the following should you use if you want all the slides in the presentation to have same look?
(A): Outline view (B): Add a slide option (C): The slide layout option (D): A presentation design template
66409. A magnetic field is produced around a current-carrying conductor.
(A): True (B): False
66410. In MS Power Point,what is a trigger?
(A): The name of a motion path (B): An item on the slide that performs an action when clicked (C): An action that advances to the next slide (D): None of these
66411. A magnetic material such as iron can change the course of magnetic lines of force.
(A): True (B): False
66412. In MS Power Point the special effects used to Introduce slides in a presentation are called:
(A): Transitions (B): Custom animations (C): Effects (D): Animations
66413. The induced emf of a conductor cutting flux lines is directly proportional to the rate of cutting.
(A): True (B): False
66414. The number of times a monitor scans the entire screen each second is called:
(A): Resolution rate (B): Refresh rate (C): Pixels (D): Scanning rate
66415. The magnetic field, current through the Hall element, and Hall voltage are all at right angles to each other.
(A): True (B): False
66416. In magnetic disk reading and writing is performed by:
(A): Head (B): Disk (C): Spindle (D): Ultra violet rays
66417. The operation of an electrical generator relies on electromagnetic induction.
(A): True (B): False
66418. The study of creating an efficient,comfortable and healthy work place while working with a computer is called:
(A): Mechanics (B): Computricks (C): Erogonomics (D): None of these
66419. When the current through a coil reverses direction, the magnetic field around the coil _____.
(A): does not change (B): disappears (C): increases in strength (D): reverses direction
66420. Which of the following devices can be used to read cheques in banks?
(A): Optical Character Reader (B): Magnetic Ink Character Recognition (C): Bar Code Reader (D): All the above
66421. The flux density is ___ when the magnetic flux is 9 µWb and the cross-sectional area of the magnetic field is 5 × 10–3 m2.
(A): 1800 µT (B): 555.56 T (C): 9 µT (D): 5 × 10–3 T
66422. What is the attribute fortag in html?
(A): pic (B): url (C): path (D): src
66423. After the magnetizing force has been removed, the ratio of the remaining magnetic flux to the saturated magnetic flux is called _____________.
(A): saturation (B): retentivity (C): hysteresis (D): coercivity
66424. Which of the following tags below are used for a multi-line text input control?
(A): Textml tag (B): Text tag (C): Textarea tag (D): Both ( and ( above
66425. You can determine the direction of the lines of force surrounding a conductor by using _____.
(A): the right-hand rule (B): the left-hand rule
66426. What is cell padding in HTML?
(A): Used to provide width to a cell (B): Used to provide height to a cell (C): Used to set space between cells (D): Used to separate cells walls from their contents
66427. A group of force lines going from the north pole to the south pole of a magnet is called the magnetic ___.
(A): retentivity (B): reluctance (C): hysteresis (D): flux
66428. For frames in HTML,how do you specify the rest of the screen?
(A): Using & (B): Using $ (C): Using (D): Using
66429. The induced voltage across a stationary conductor in a stationary magnetic field ___.
(A): equals 0 V (B): is usually very large (C): varies with time (D): depends on the strength of the magnetic field
66430. What is a Firewall in Computer Network?
(A): A system designed to prevent unauthorized access (B): An operating system used in computer network (C): A web browsing software (D): A physical boundary of Network
66431. When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage will _____.
(A): not be affected (B): equal 0 V (C): decrease (D): increase
66432. DNS is the abbreviation of:
(A): Dynamic Name System (B): Domain Name System (C): Dynamic Network System (D): Domain Network System
66433. ___ is the ability of a material to remain magnetized after removal of the magnetizing force.
(A): Reluctance (B): Hysteresis (C): Retentivity (D): Induction
66434. What is the meaning of Bandwidth in Network?
(A): Transmission capacity of communication channels (B): IP address used in a network (C): Frequency of the signal transmitted (D): None of these
66435. Ferromagnetic materials have minute magnetic ___ created within their atomic structure by the orbital motion and spin of electrons.
(A): forces (B): flux lines (C): domains (D): tapes
66436. Whcih command in Ms Dos divides the surface of the blank disk into sectors and assigns unique address to each one?
(A): chkdsk (B): scandisk (C): format (D): mkdir
66437. The ___ is an electromagnetic device that contains a coil rotating on a jeweled bearing mount.
(A): permanent-magnet speaker (B): single-pole, double-throw relay (C): crankshaft position sensor
66438. Which command in MS Dos displays all the files having the same name but different extensions?
(A): dir filename.ext (B): dir filename. (C): dir.ext (D): dir dilename.
66439. The movable part in a relay is the _____.
(A): plunger (B): armature (C): cone (D): brushes
66440. Which command in MS Dos creates a directory subdirectory?
(A): cd (B): md (C): dir (D): crtdir
66441. Permeability is the inverse equivalent of which electrical term?
(A): Voltage (B): Current (C): Resistance (D): Conductance
66442. Which of the following commands is given to reboot the computer?
(A): Ctrl+Alt+Del (B): Ctrl+Alt+Tab (C): Ctrl+F3 (D): Ctrl+Alt+F2
66443. Which electromagnetic device uses brushes and a commutator?
(A): A speaker (B): A dc generator (C): A relay (D): A solenoid
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