If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity
If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity less than that of disc and in the same direction.
Description : The magnetic meridian at any point, is the direction indicated by a freely suspended (A) Magnetic needle (B) And properly balanced magnetic needle (C) Properly balanced and uninfluenced by local attractive force (D) Magnetic needle over an iron pivot
Last Answer : (C) Properly balanced and uninfluenced by local attractive force
Description : The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known (A) Declination (B) Azimuth (C) Dip (D) Bearing
Last Answer : (C) Dip
Description : A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each -Physics-10
Last Answer : half revolution When a rectangular coil is rotated in magnetic field, the direction of the induced current changes once in half revolution. As a result, the direction of the current in the coil remains the same. In text 13.7 Page:238
Description : As an armature revolves within a magnetic field, friction is developed between the rotated magnetized particles as they pass through each magnetization cycle. This results in ____________. A. copper loss B. eddy-current loss C. hysteresis loss D. armature reaction
Last Answer : Answer: C
Description : A bar magnet when suspended freely always points in the? (A) East west direction (B) North south direction (C) vertically upwards (D) vertically downwards
Last Answer : A bar magnet when suspended freely always points in the North south direction
Description : Basic electrical motor action depends on _______________. A. a conductor rotated within a magnetic field B. a current carrying conductor placed in a magnetic field C. the relative force of the commutator and commutating poles D. the relative force of the armature and interpoles
Last Answer : Answer: B
Description : When microwave energy is passed through a piece of ferrite in a magnetic field, another effect occurs. If the frequency of the microwave energy is much greater than the electron wobble frequency, the plane of polarization of the wavefront is rotated. This is known as
Last Answer : Faraday Rotation Effect
Description : __________ Centrifuge is normally used in sugar mills. (A) Tubular bowl (B) Disc-bowl (C) Suspended batch basket (D) Perforated horizontal basket continuous
Last Answer : (C) Suspended batch basket
Description : __________ centrifuge is the most suitable for separation of non-friable crystals. (A) Tubular bowl (B) Disc-bowl (C) Perforated horizontal basket continuous (D) Suspended batch baske
Last Answer : (C) Perforated horizontal basket continuous
Description : Perspective view of an object is shown below. The object is rotated 90 degrees anticlockwise about z-axis (when viewed from a point on the positive z-axis towards the origin) and then rotated 180 ... Which one of the following perspective view options will be the result of the rotations?
Last Answer : A
Description : 1. Which of the following property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.) -Physics-10
Last Answer : Solution: (c) and (d) When a proton enters the region of magnetic field, it experiences magnetic force. Due to which the path of the proton becomes circular. As a result, the velocity and the momentum change.
Last Answer : Copper, even though costly, finds use in the windings of electrical machines because copper points offer low contact resistance , copper can be easily soldered and welded, copper windings are less bulky and the machines become compact.
Last Answer : The magnetic materials exhibit the property of magnetisation because of spin of nucleus.
Last Answer : The stray line of magnetic flux is defined as a line of magnetic flux which does not follow the designed path.
Last Answer : It assures a position which follows a line of magnetic flux
Last Answer : The magnetic reluctance of a material decreases with increasing cross-sectional area of the material.
Last Answer : The uniform magnetic field is the field in which all lines of magnetic flux are parallel and equidistant.
Last Answer : Magnetic moment is a vector quantity.
Description : A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be
Last Answer : A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be M/2.
Last Answer : When an iron piece is placed in a magnetic field the magnetic lines of force will bend away from their usual paths in order to pass through the piece.
Last Answer : A material which is slightly repelled by a magnetic field is known as diamagnetic material.
Last Answer : The direction of magnetic lines of force is from north pole to south pole.
Last Answer : A magnetic field exists around moving charges.
Description : ______ is most commonly used for making magnetic recording tape.
Last Answer : Ferric oxide is most commonly used for making magnetic recording tape.
Description : Most widely and commonly used coagulant for the removal of suspended impurities in water is (A) Bleaching powder (B) Slaked lime (C) Alum (D) Copper sulphate
Last Answer : (C) Alum
Description : The value of critical field below the transition temperature will?
Last Answer : The value of critical field below the transition temperature will increase.
Description : The coil of a moving coil galvanometer has an effective area of 4xx10^(-2)m^(2)`. It is suspended in a magnetic field of `5xx10^(-2)` Wb `m^(-2)`. If
Last Answer : The coil of a moving coil galvanometer has an effective area of 4xx10^(-2)m^(2)`. It is suspended in a ... D. current sensitivity is `40 deg` `A^(-1)`
Description : High content copper amalgam . . . a. generally requires greater energy to accomplish trituration b. should be placed rapidly in large increments c. Continues to leak since the ... not cause galvanism in oral environment e. is equally effective as conventional alloys in clinical studies
Last Answer : a. generally requires greater energy to accomplish trituration
Description : Which of the following statement(s) is/are correct about a Judge of the Supreme Court of India? 1. A Judge of the Supreme Court is appointed by the President of India. 2. He holds office during the pleasure of the President. 3. He ... A) 1, 2 and 3 (B) 1, 3 and 4 (C) 1 and 3 (D) 1 and 4
Last Answer : (D) 1 and 4
Description : Which of the following can be done under conditions of financial emergency? 1. State Legislative Assemblies can be abolished. 2. Central Government can acquire control over the budget and expenditure of States. 3. Salaries of the Judges of ... 1, 2 and 3 (B) 2, 3 and 4 (C) 1 and 2 (D) 2 and 3
Last Answer : (D) 2 and 3
Description : A copper disc has a hole. If the disc is heated, the size of the hole - (1) increases (2) decreases (3) No change (4) first increases and than decreases
Last Answer : (1) increases Explanation: When a metal plate with a circular hole at its centre is heated, definitely along with the areal expansion of the plate the diameter (sum of two radii) of the circular hole also increases.
Description : A copper disc has a hole. If the disc is heated, the size of the hole (1) increases (2) decreases (3) No change (4) first increases and than decreases
Last Answer : increases
Description : An ellipse can also be rotated about its center coordinates by rotating a.End points b.Major and minor axes c.Only a d.None
Last Answer : b.Major and minor axes
Description : A line AB with end point A (2,3) & B (7,8) is to be rotated about origin by 300 inclockwise direction. Determine the coordinates of end points S of rotated line. a.(3.232, 2.598) b.(5.232, 3.598) c.(3.232, 1.298) d.(3.232, 1.598)
Last Answer : d.(3.232, 1.598)
Description : The torque of 50 Nm is applied on the wheel operating a valve. If the wheel is rotated through two revolutions, work done in Newton-metres is given by a.628 b.107 dynes c.314 d.25 e.100
Last Answer : a. 628
Description : what- A triangle is rotated repeatedly around point P to make a pinwheel.Which angle appears to be the angle of rotation?
Last Answer : 40
Description : What is it called as the screw moves away when only one part of the circular scale is rotated ?
Last Answer : The smallest calculation is when the screw moves when only one part of the circular scale is rotated.
Description : I must have pressed something, but I don't know what, and I can't reset the screen.
Last Answer : Press CTRL + ALT + UP ARROW to return to the screen.
Description : I accidentally squeezed something and my image turned, I have an Aspire E 15 laptop and Windows 10. Please don't know how to get it back to its original state?
Last Answer : Ctrl + Alt + up or down arrow. That should work
Description : how to print on both sides of a tent card & have the name rotated on the other side
Last Answer : Need Answer
Description : Newman projection of Butane is given, C-2 is rotated by `120^(º)` along `C_(2)-C_(3)` bond in anticloclwise direction, the conformation formed is :
Last Answer : Newman projection of Butane is given, C-2 is rotated by `120^(º)` along `C_(2)-C_(3)` ... A. anti B. fully eclipsed C. gauche D. partially eclipsed
Description : Which conformational state of n-butane lies in higher energy state when rotated along `C_(2)-C_(3)` bond?
Last Answer : Which conformational state of n-butane lies in higher energy state when rotated along `C_(2)-C_(3)` bond?
Description : What time period on earth would be 10 hours long if earth rotated on its axis every 10 hours?
Last Answer : Feel Free to Answer
Description : How much does it cost to have auto tires rotated?
Last Answer : Auto tire rotation often comes at the grand price of free. If you return to the location where the tires were purchased they will, quite often rotate them for free.
Description : Where can I get my tires balanced, rotated and aligned?
Last Answer : If you are going to get your tires rotated you should also align and balance them. The reason for this is to make sure nothing is out of place. You can get this done at places like AutoZone.
Description : If the steering stand selector switch is allowed to remain in the 'Non-Followup' mode after testing of the steering gear, the rudder will _____________. EL-0097 A. not respond to commands from the ... actuator D. stop moving only when the helm is counter-rotated to put the pump at neutral stroke
Last Answer : Answer: A
Description : In a roll crusher, both the rolls (A) Have the same diameter (B) Are rotated towards each other (C) Run either at the same or different speeds (D) All (A), (B) and (C
Last Answer : (D) All (A), (B) and (C
Description : In nut and bolt fastener, nut is generally held stationary while bolt is rotated. a) True b) False
Last Answer : b) False
Description : The Philippine Code of Ethics requires that lead engagement partners of listed entities be rotated at least once every: a. 2 years b. 3 years c. 5 years d. 7 years
Last Answer : 5 years
Description : _____codes arespecial linear block codes with one extraproperty. If a codeword is rotated, the result is another codeword. A) Non-linear B) Convolution C) Cyclic D) none of the above
Last Answer : Cyclic