Which of these materials requires the least value of magnetic field strength to magnetize it?
a. Nickel b. Silver c. Tungsten d. Sodium chloride
Description : What equipment should you use to de-magnetize a magnetic tape transport?
Last Answer : A hand-held degausser.
Description : How do you magnetize something made of ironcobalt or nickle?
Last Answer : Feel Free to Answer
Description : In replacing a defective transformer with a new one, which of the following actions must be carried out to insure proper operation of the equipment it serves? A. The secondary leads must be grounded ... magnetize it. D. The iron core must be grounded for 10 minutes to remove any residual magnetism.
Last Answer : Answer: B
Description : The energy required to magnetize and demagnetize is called a) Saturation b) Retentivity c) Coercivity d) Hysteresis loss
Last Answer : d) Hysteresis loss
Description : How to Magnetize Metal
Last Answer : How to Magnetize Metal We're usually familiar with magnets in the form of clunky metal already magnetized. Not a lot of people know that you can actually make more magnets from existing magnets. ... magnetize other metallic objects. As long as the battery life holds, the nail will remain magnetized.
Description : A dipole antenna requires to be fed with 20 kW of power to produce a given signal strength to a particular distant point. If the addition of a reflector makes the same field strength available with an input power of 11kW ... Gain referred to this particular dipole). A. 4.75 B. 2.6 C. 1.81 D. 4.24
Last Answer : B. 2.6
Description : A dipole antenna requires to be feed with 20 kW of power to produce a given signal strength to a particular distant point. If the addition of a reflector makes the same field strength available with an input power of 11 ... ( Gain referred to this particular dipole) A. 4.24 B. 1.81 C. 4.75 D. 2.6
Last Answer : D. 2.6
Description : __________ alloys have the highest specific strength of all the structural materials out of the following. (A) Magnetic steel (B) Titanium (C) Chromium (D) Magnesium
Last Answer : (B) Titanium
Description : An evanescent mode occurs when: a. A wave is attenuated rather than propagated. b. The propagation constant is purely imaginary. c. m = 0 = n so that all field components vanish. d. The wave frequency is the same as the cutoff frequency.
Last Answer : An evanescent mode occurs when: A wave is attenuated rather than propagated.
Description : A half wavelength Dipole antenna has _________ Radiation Pattern a. Hemispherical b. Omni-Directional c. Isotropic d. End fire
Last Answer : A half wavelength Dipole antenna has Omni-Directional Radiation Pattern
Description : An antenna located in a city is a source of radio waves. How much time does it take the wave to reach a town 12,000 km away from the city? a. 36 s b. 20 us c. 20 ms d. 40 ms
Last Answer : An antenna located in a city is a source of radio waves. How much time does it take the wave to reach a town 12,000 km away from the city? a. 36 s b. 20 us c. 20 ms d. 40 ms
Description : At Service provider end IMEI number of MS is basically stored in: a. HLR b. VLR c. AUC d. EIR
Last Answer : At Service provider end IMEI number of MS is basically stored in: a. HLR b. VLR c. AUC d. EIR
Description : Which cable connects the subscriber telephone to the nearest end office in the local loop. a. Coaxial b. Fiber-optic c. Twisted-pair d. Both (b) and (c)
Last Answer : Which cable connects the subscriber telephone to the nearest end office in the local loop. a. Coaxial b. Fiber-optic c. Twisted-pair d. Both (b) and (c)
Description : Unlike coax and twisted pair, optical fibers are immune to a. High-frequency transmission b. Signal attenuation c. Power loss d. Electromagnetic interference
Last Answer : Unlike coax and twisted pair, optical fibers are immune to Electromagnetic interference
Description : Regenerative repeaters are placed along the communication path to control: a. Power b. Noise c. Frequency d. Amplitude
Last Answer : Regenerative repeaters are placed along the communication path to control: Noise
Description : The Fourier transform of a gate pulse is: a. Sinc function b. Triangular function c. Gate function d. Unit step unction
Last Answer : The Fourier transform of a gate pulse is: Sinc function
Description : Where the poles should be placed on the unit circle for stable filter? a. Outside b. Inside c. both a & b d. none of the above
Last Answer : Where the poles should be placed on the unit circle for stable filter? a. Outside b. Inside c. both a & b d. none of the above
Description : Radio frequency ranges from 30MHz to 1GHz and it is suitable for: a. Point to point transmission b. Omni directional transmission c. Local point to point transmission d. None of the above
Last Answer : Radio frequency ranges from 30MHz to 1GHz and it is suitable for: Local point to point transmission
Description : What type of communication use Radio waves: a. Unicast b. Both (a) and (c) can be used c. Multicast d. None of the above
Last Answer : What type of communication use Radio waves: Multicast
Description : Fast fading occurs if the channel____________ changes rapidly within the symbol duration. a. Bandwidth b. Frequency c. Impulse response d. None of the above
Last Answer : Fast fading occurs if the channel Impulse response changes rapidly within the symbol duration.
Description : As we know when there is a joint in optical fiber then there will be some loss then this loss be minimized by a. Using index matching fluid in the gap b. Making V-grooved splicing c. Both (a)and (b) d. Making carefully polishing
Last Answer : As we know when there is a joint in optical fiber then there will be some loss then this loss be minimized by Using index matching fluid in the gap
Description : When placed in a magnetic field, which of the materials listed will maintain the highest permeability? A. Glass B. Bakelite C. Soft iron D. Aluminum
Last Answer : Answer: C
Description : The superconducting materials will be independent of which of the following? a) Magnetic field b) Electric field c) Magnetization d) Temperature
Last Answer : b) Electric field
Description : Diamagnetic materials (A) Are magnetised by eddy currents only (B) Are non-magnetic and cannot be magnetised (C) Are magnetised in direction opposite to the magnetic field (D) Can be magnetised in one direction only
Last Answer : (C) Are magnetised in direction opposite to the magnetic field
Description : If materials become superconducting when cooled, any magnetic field will be expelled. This is called: w) diamagnetism x) repulsion y) the Landow Effect z) the Meissner effect
Last Answer : ANSWER: Z -- THE MEISSNER EFFECT
Description : With the help of a diagram of experimental setup describe an activity to show that the force acting on a current carrying conductor placed in a magnetic field increases with increase in field strength. -Science
Last Answer : Magnetic Effects of Electric Current Chapter Wise Important Questions Class 10 Science October 1, 2019 by Bhagya Important Question for Class 10 Science Magnetic Effects of Electric Current PDF ... a current carrying conductor placed in a magnetic field increases with increase in field strength.
Description : If the current in the core decreases, what will the strength of the magnetic field be? -Do You Know?
Last Answer : answer:
Description : In the diagram `I_(1),I_(2)` are the strength of the currents in the loop and straight conductors respectively `OA=AB=R.` the net magnetic field at th
Last Answer : In the diagram `I_(1),I_(2)` are the strength of the currents in the loop and straight conductors respectively `OA=AB= ... ` C. `1/(pi)` D. `1/(2 pi)`
Description : A proton is projected with a speed of `3X10^6 ms ^(-1)` horizontally from est to west. A uniform magnetic field `vec B` of strength `2.0X10^(-3)` T ex
Last Answer : A proton is projected with a speed of `3X10^6 ms ^(-1)` horizontally from est to west. A uniform magnetic field ` ... (2)` D. `2.9xx10^(11)m//s^(2)`
Description : The strength of the magnetic field at a point `r` near a long straight current carrying wire is `B`. The field at a distance `r/2` will be
Last Answer : The strength of the magnetic field at a point `r` near a long straight current carrying wire is `B`. The field at a ... . `B/2` B. `B/4` C. 2B D. 4B
Description : The illustrated circuits are used to measure ___________. EL-0024 A. resistance B. gauss or magnetic field strength C. battery discharge rate in Amp-hours D. current
Last Answer : Answer: A
Description : The most practical way to control the voltage output of an AC generator is to vary the _____________. A. number of windings B. speed of the rotating field C. strength of the rotating magnetic field D. power factor of the load
Description : The amount of mechanical force or torque produced by an electric motor depends on the ________________. A. strength of its magnetic field B. amount of armature current flow C. length of conductor in the field D. all of the above
Last Answer : Answer: D
Description : The amount of voltage induced in the windings of an AC generator depends mainly on _____________. A. the number of field poles energized B. the speed at which the stator windings rotate through the magnetic field C. the strength of the magnetic field D. all of the above
Description : The rotor of a synchronous motor operates in synchronism with the rotating field because ______________. A. of the amortisseur windings B. the rotor is magnetically locked into step with the ... field strength varies directly with rotor slip D. the stator flux rotates in the opposite direction
Description : The amount of voltage induced in the windings of an AC generator depends on ____________. A. the number of conductors in series per winding B. the speed at which the magnetic field passes across the winding C. the strength of the magnetic field D. all of the above
Description : By inserting a soft iron piece into solenoid, what does the strength of the magnetic field?
Last Answer : Increase
Description : If the current in the core decreases, what will the strength of the magnetic field be?
Last Answer : Decreases
Description : Read More Details about this McqTesla is the unit of-------------? A. Magnetic Field Strength (Answer) B. Electric Field Strength C. Gravitational Field Strength D. Nuclear Field Strength
Last Answer : A. Magnetic Field Strength (Answer)
Description : Strength of magnetic field of solenoid can be increased by adding core made of A. copper B. ferrous C. silver D. aluminum
Last Answer : ferrous
Description : Strength of magnetic field is known as A. flux B. density C. magnetic strength D. magnetic flux density
Last Answer : magnetic strength
Description : Pick up the correct statement from the following: (A) Permeability is a measure of conducting the magnetic lines of force in the material (B) Permeability is a measure of the extent to which magnetic ... magnetic flux density (B) to the field strength of the magnetizing field (D) All of these
Last Answer : Answer: Option D
Description : What is the effect on magnetron operation if the magnetic field strength is too high?
Last Answer : The magnetron will not oscillate.
Description : The induced emf in a coil depends upon: a. Strength of magnetic field b. Resistance of the coil c. area of the coil d. All of them
Last Answer : d. All of them
Description : An α particle moves perpendicular to a constant magnetic field of strength 1.2 T in a circular path of radius 0.7 m. The speed of α particle in ms-1 is ______________ a) 2.7 × 107 b) 2.6 × 107 c) 3.2 × 107 d) 2.0 × 107
Last Answer : a) 2.7 × 107
Description : The pole faces of U-shaped magnet in a moving coil galvanometer are made concave to a) decrease the strength of magnetic field b) create a non-uniform magnetic field c) make the magnetic field radial d) All of these
Last Answer : c) make the magnetic field radial
Description : When the field is strong, the lines of force are: (a) Closer (b) Parallel (c) Farther (d) All of above 45. The electric lines of force determine the strength of an: (a) Gravitational field (b) Constant field (c) Magnetic field (d) Electric field
Last Answer : d) Electric field
Description : The Tesla and the Gauss are units of measure of: w) conductance x) magnetic field strength y) magnetic flux z) electrical current
Last Answer : ANSWER: X -- MAGNETIC FIELD STRENGTH
Description : 1. If the current in the core decreases, what will the strength of the magnetic field be? 2. What is the commonly used unit for measuring the speed of data transmission? 3. The Govt. of ... flows between the Vindhya and Satpura ranges? 20. Which was a journal brought out by Abul Kalam Azad ?
Last Answer : Answer : 1. Decreases 2. Bits per second 3. Jeevan Sathi Yojana 4. Because warm and cold currents meet 5. Ranga II 6. Fatty tissue 7. Uttar Pradesh 8. Oil gas 9. Silvassa 10. Hunter 11. Sports ... 16. Speaker 17. Because of inadequate supply of air 18. Growth of GNP 19. Narmada 20. Al -Hilal