The pole pieces of the magnet used in a pivoted coil galvanometer are

The pole pieces of the magnet used in a pivoted coil galvanometer are
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The pole pieces of the magnet used in a pivoted coil galvanometer are A. plane surfaces of a ... magnet D. cylindrical sufaces of a horse-shoe magnet
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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

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Last Answer : c) make the magnetic field radial

The galvanometer used in school and college laboratories is a __________ galvanometer. a) pivoted type b) astatic c) mirror d) none of these

Description : The galvanometer used in school and college laboratories is a __________ galvanometer. a) pivoted type b) astatic c) mirror d) none of these

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A 2 m long wooden plank of mass 20 kg is pivoted (supported from below) at 0.5 m from either end. A person of mass 40 kg

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Assertion current sensitivity of a galvanometer is directley proportionall to the current through the coil. Reason Voltage sensitivity is inversely pr

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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

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In order to increase the sensitivity of a moving coil galvanometer, one should decrease

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In a moving coil galvanometer, the deflection of the coil q is related to the electrical current i by the relation

Description : In a moving coil galvanometer, the deflection of the coil q is related to the electrical current i by the relation

Last Answer : In a moving coil galvanometer, the deflection of the coil q is related to the electrical current i by the ... theta^(2)` D. `I prop sqrt(theta)`

A galvanometer has a coil of resistance `100 Omega` and gives a full-scale deflection for `30 mA` current. If it is to work as a voltmeter of `30 V` r

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A moving coil galvanometer has 150 equal divisions. Its current sensitivity is 10-divisions per milliampere and voltage sensitivity is 2 divisions per

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A moving coil galvanometer is converted into an ammeter reads upto `0.03 A` by connecting a shunt of resistance `4r` across it and ammeter reads up `0

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To send 10% of the main current through a moving coil galvanometer of resistance `99omega`, the shunt required is –

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Aboard ship, a grounded field coil in an AC motor can be determined by using a _________________. A. portable growler B. galvanometer C. visual inspection D. megohmmeter

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Last Answer : Answer: D

In a galvanometer, what two methods are used to indicate the amount of coil rotation?

Description : In a galvanometer, what two methods are used to indicate the amount of coil rotation?

Last Answer : The pointer arrangement and the light and mirror arrangement.

What physical component of a galvanometer provides the restoring force for the coil?

Description : What physical component of a galvanometer provides the restoring force for the coil?

Last Answer : Phosphor bronze ribbons.

In a galvanometer, what two methods are used to indicate the amount of coil rotation?

Description : In a galvanometer, what two methods are used to indicate the amount of coil rotation?

Last Answer : he pointer arrangement and the light and mirror arrangement.

What physical component of a galvanometer provides the restoring force for the coil?

Description : What physical component of a galvanometer provides the restoring force for the coil?

Last Answer : Phosphor bronze ribbons.

A galvanometer with 20 ohms coil resistence has a full-scale deflection of 10 mA. A 0.02 ohm is placed across the meter to increase its rating capacity. What is the new full scale current for the meter?

Description : A galvanometer with 20 ohms coil resistence has a full-scale deflection of 10 mA. A 0.02 ohm is placed across the meter to increase its rating capacity. What is the new full scale current for the meter?

Last Answer : False.

The current I passing through the galvanometer coil is related to the angle of deflection θ as a) I ∝ θ b) I 1/∝ θ c) I ∝ θ 2 d) I 1/∝ θ 2

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Last Answer : a) I ∝ θ

A galvanometer in which the coil quickly comes to rest is called a ________ galvanometer a) Ballistic b) Mirror c) Astatic d) Dead beat

Description : A galvanometer in which the coil quickly comes to rest is called a ________ galvanometer a) Ballistic b) Mirror c) Astatic d) Dead beat

Last Answer : d) Dead beat

Sensitivity of a galvanometer can be increased by a) Increasing the number of turns of the coil b) Decreasing the magnetic field c) Increasing the ratio c ⁄BAN d) Decreasing the area of the coil

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Last Answer : a) Increasing the number of turns of the coil

Which one of the following is the way in which a galvanometer is converted into a voltmeter? Is it by connecting: w) a high resistance coil in parallel with its moveable coil x) a low resistance coil in parallel with its moveable coil y) a high resistance coil in series with its moveable coil z) a low resistance coil in series with its moveable coil

Description : Which one of the following is the way in which a galvanometer is converted into a voltmeter? Is it by connecting: w) a high resistance coil in parallel with its moveable coil x) a low resistance ... coil in series with its moveable coil z) a low resistance coil in series with its moveable coil 

Last Answer : ANSWER: Y -- A HIGH RESISTANCE COIL IN SERIES WITH ITS MOVEABLE COIL 

The north pole of the earth’s magnet is near the geographical which direction? -Do You Know?

Description : The north pole of the earth’s magnet is near the geographical which direction? -Do You Know?

Last Answer : answer:

How will we find out the north pole and south pole of a bar magnet with no markings to indicate poles?

Description : How will we find out the north pole and south pole of a bar magnet with no markings to indicate poles?

Last Answer : If you roughly know where North is, tie the bar magnet to a piece of thin string so it balances horizontally and let it dangle. Once it stops spinning and waving about, one end should point North. Mark this end as with an N for north.

What will happen if the north pole of one magnet and the north pole of another magnet are put together?

Description : What will happen if the north pole of one magnet and the north pole of another magnet are put together?

Last Answer : What is the answer ?

How will we find out the north pole and south pole of a bar magnet with no markings to indicate poles?

Description : How will we find out the north pole and south pole of a bar magnet with no markings to indicate poles?

Last Answer : If you roughly know where North is, tie the bar magnet to a piece of thin string so it balances horizontally and let it dangle. Once it stops spinning and waving about, one end should point North. Mark this end as with an N for north.

If a bar magnet, tied in the middle with a thread, were suspended at the north pole of the earth, it would take (a) a horizontal position (b) a nearly vertical position with its north pole pointing downward (c) a vertical position with its south pole pointing downward (d) a slanting position

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Last Answer : Ans:(b)

The south pole of the earth’s magnet is near the geographical ________. (1) south (2) east (3) west (4) north

Description : The south pole of the earth’s magnet is near the geographical ________. (1) south (2) east (3) west (4) north

Last Answer : (4) north Explanation: The South Pole of the Earth's magnet is in the geographical North because it attracts the North Pole of the suspended magnet and vice versa. Thus, there is a magnetic S-pole near the geographical North, and a magnetic Npole near the geographical South

When a bar magnet is cut into two equal halves, the pole strength of each piece (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Description : When a bar magnet is cut into two equal halves, the pole strength of each piece (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Last Answer : (4) remains the same Explanation: The poles remains same whether the magnet is cut into two equal half or more and also pole strength remains same but magnetic moment reduces due to decrease in the length of ... is called north pole (N-poled of the magnet and the other end the south pole (S-pole).

Magnet chatter or 'pumping' occurring in a magnetic contactor can be caused by ______________. A. dirt or grease on pole faces B. mechanical interference in the contacts C. chattering contacts on the control relay D. magnetic lock out of the contacts

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If a Magnet has third pole, then the third pole is called–

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The north pole of the earth’s magnet is near the geographical which direction?

Description : The north pole of the earth’s magnet is near the geographical which direction?

Last Answer : South

The strongest part(s) of a magnet is/are -----? A. North pole B. South pole C. North and south pole (Answer) D. Median of north and south pole

Description : The strongest part(s) of a magnet is/are -----? A. North pole B. South pole C. North and south pole (Answer) D. Median of north and south pole

Last Answer : The strongest part(s) of a magnet is/are -----?A. North poleB. South poleC. North and south pole (Answer)D. Median of north and south pole

The dipole formation in a magnet is due to a) Interaction between the north and south poles together b) Interaction between the north pole with the air c) Interaction between the south pole with the air d) Interaction of north and south pole separately with air

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Last Answer : a) Interaction between the north and south poles together

The direction of magnetic lines of force is (a) from south pole to north pole (b) from north pole to south pole (c) from one end of the magnet to another (d) none of the above

Description : The direction of magnetic lines of force is (a) from south pole to north pole (b) from north pole to south pole (c) from one end of the magnet to another (d) none of the above

Last Answer : (b) from north pole to south pole

Using Weber’s molecular theory of magnetism, describe the polarity of the magnetic poles produced by stroking a magnetic material from right to left with the south pole of a magnet.

Description : Using Weber’s molecular theory of magnetism, describe the polarity of the magnetic poles produced by stroking a magnetic material from right to left with the south pole of a magnet.

Last Answer : South pole at the right, north pole at the left.

Magnetic lines of force have all but one of the following characteristics. The one that they DO NOT have is: w) they go from the South-pole to the North-pole of a magnet outside of the magnet x) they are most concentrated at the poles of a magnet y) they pass through copper z) they never cross one another

Description : Magnetic lines of force have all but one of the following characteristics. The one that they DO NOT have is: w) they go from the South-pole to the North-pole of a magnet outside of the magnet ... most concentrated at the poles of a magnet y) they pass through copper z) they never cross one another

Last Answer : ANSWER: W -- THEY GO FROM THE SOUTH-POLE TO THE NORTH-POLE OF THE M AGNET 

1. What is the Branch of science which deals with the study of skin of man? 2. Up to howmuch age can the Members of the Union Public Service Commission function? 3. The north pole of the earth’s magnet is near the geographical which direction? 4. Which region gets no rainfall throughout the year? 5. Tansen, the greatest musician of Akbar’s court, belonged to which place?

Description : 1. What is the Branch of science which deals with the study of skin of man? 2. Up to howmuch age can the Members of the Union Public Service Commission function? 3. The north pole of the ... is the largest irrigation canal in the world? 20. Who bestowed the Office of Peshwa on Balaji Vishwanath ?

Last Answer : Answer : 1. Dermatology 2. 65 years 3. South 4. The Tundra Region 5. Gwalior 6. Hague 7. Oct. 24, 1945 8. Malacology 9. Cirque 10. Akbar 11. UK 12. Yeast 13. Promoting adult ... Inselberg 15. Todar Mal 16. S. Chandrashekhar 17. Rifampicin 18. French revolution 19. Indira Gandhi Canal 20. Shahu

When a bar magnet is cut into two equal halves, the pole strength of each piece – (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Description : When a bar magnet is cut into two equal halves, the pole strength of each piece – (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Last Answer : remains the same

Which of the following electric meter movements uses a stationary permanent magnet and movable coil? A. D'Arsonval B. Electrodynamometer C. Moving iron-vane D. Inclined coil iron-vane

Description : Which of the following electric meter movements uses a stationary permanent magnet and movable coil? A. D'Arsonval B. Electrodynamometer C. Moving iron-vane D. Inclined coil iron-vane

Last Answer : Answer: A

Give reason: Stationary coil and stationary magnet cannot produce induced electric current.

Description : Give reason: Stationary coil and stationary magnet cannot produce induced electric current.

Last Answer : An emf is induced in the coil only when there is relative motion between the coil and the magnet.

Can a static magnet induce an e.m.f in a stationary coil of wire? Give reasons.

Description : Can a static magnet induce an e.m.f in a stationary coil of wire? Give reasons.

Last Answer : No, when both coil and magnet are stationary, the magnetic field linked with the coil remains constant. Only when the magnetic field linked with the coil changes, current is produced.

Induced current in coil by a magnet turns it into an A. straight wire B. magnet C. ammeter D. electromagnet

Description : Induced current in coil by a magnet turns it into an A. straight wire B. magnet C. ammeter D. electromagnet

Last Answer : electromagnet

By accelerating the magnet inside the coil, the current in it A. increases B. decreases C. remains constant D. reverses

Description : By accelerating the magnet inside the coil, the current in it A. increases B. decreases C. remains constant D. reverses

Last Answer : increases

Permanent-magnet moving coil instrument can be used in

Description : Permanent-magnet moving coil instrument can be used in

Last Answer : dc work only

How can electric currents be induced with a coil and a magnet?

Description : How can electric currents be induced with a coil and a magnet?

Last Answer : by moving either the magnet or the coil

What is the reason why the scale of a permanent-magnet moving coil instrument is uniform?

Description : What is the reason why the scale of a permanent-magnet moving coil instrument is uniform?

Last Answer : because it is spring controlled

Magnetic flux linked with a coil can be changed by using an: a. Permanent magnet b.Bar magnet c. Electromagnet d. Horseshoe magnet

Description : Magnetic flux linked with a coil can be changed by using an: a. Permanent magnet b.Bar magnet c. Electromagnet d. Horseshoe magnet

Last Answer : b.Bar magne

Which component is mainly used in a DC generator: a.slip ring b. commutator c. magnet d. coil

Description : Which component is mainly used in a DC generator: a.slip ring b. commutator c. magnet d. coil

Last Answer : b. commutator

Permanent Magnet Moving Coil (PMMC) Instrument

Description : Permanent Magnet Moving Coil (PMMC) Instrument

Last Answer : Permanent Magnet Moving Coil (PMMC) Instrument

A permanent magnet moving coil instrument gives full scale deflection of 25mA when a voltage of 75mV is applied across it. Calculate: (i) Resistance of shunt required for full scale deflection of 150 A. (ii) Series resistance for full scale deflection of 500 V.

Description : A permanent magnet moving coil instrument gives full scale deflection of 25mA when a voltage of 75mV is applied across it. Calculate: (i) Resistance of shunt required for full scale deflection of 150 A. (ii) Series resistance for full scale deflection of 500 V.

Last Answer : Answer :