154354
Ferromagnetic materials used in a transformer must have
1 low permeability and high hysteresis loss
2 high permeability and low hysteresis loss
3 high permeability and high hysteresis loss
4 low permeability and low hysteresis loss
Explanation:
B Ferromagnetic materials core used in transformer must have high permeability so that it may show a high value of magnetic induction and it should have low hysteresis loss in order to decrease the energy losses.
Manipal UGET-2009]**#Karnataka (CET)-2009
Magnetism and Matter
154359
Magnetic susceptibility of diamagnetic materials is of the order of (SI units)
1 $+10^{5}$
2 $+10^{-4}$ to $10^{-2}$
3 $+10^{-5}$
4 $-10^{-5}$
Explanation:
D The magnetic susceptibility of a diamagnetic substance is negative and very slightly less than one and of the order of $10^{-5}$.
UPSEE - 2016
Magnetism and Matter
154360
Permanent magnet has properties retentivity and coercivity respectively,
1 low-low
2 high - high
3 high - low
4 low - high
Explanation:
B The materials suitable for permanent magnets must have high retentivity and high permeability. Also, these materials should have high coercivity so that external magnetic fields in opposite directions can not easily demagnetize the magnet.
UPSEE - 2015
Magnetism and Matter
154363
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond curie temperature, then it will show
1 paramagnetism
2 diamagnetism
3 anti-ferromagnetism
4 no magnetic property
Explanation:
A All the ferromagnetic material becomes paramagnetic material above the curie temperature. Thus, Nickel is a ferromagnetic material and when its temperature is increased above curie temperature, then it becomes paramagnetic.
154354
Ferromagnetic materials used in a transformer must have
1 low permeability and high hysteresis loss
2 high permeability and low hysteresis loss
3 high permeability and high hysteresis loss
4 low permeability and low hysteresis loss
Explanation:
B Ferromagnetic materials core used in transformer must have high permeability so that it may show a high value of magnetic induction and it should have low hysteresis loss in order to decrease the energy losses.
Manipal UGET-2009]**#Karnataka (CET)-2009
Magnetism and Matter
154359
Magnetic susceptibility of diamagnetic materials is of the order of (SI units)
1 $+10^{5}$
2 $+10^{-4}$ to $10^{-2}$
3 $+10^{-5}$
4 $-10^{-5}$
Explanation:
D The magnetic susceptibility of a diamagnetic substance is negative and very slightly less than one and of the order of $10^{-5}$.
UPSEE - 2016
Magnetism and Matter
154360
Permanent magnet has properties retentivity and coercivity respectively,
1 low-low
2 high - high
3 high - low
4 low - high
Explanation:
B The materials suitable for permanent magnets must have high retentivity and high permeability. Also, these materials should have high coercivity so that external magnetic fields in opposite directions can not easily demagnetize the magnet.
UPSEE - 2015
Magnetism and Matter
154363
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond curie temperature, then it will show
1 paramagnetism
2 diamagnetism
3 anti-ferromagnetism
4 no magnetic property
Explanation:
A All the ferromagnetic material becomes paramagnetic material above the curie temperature. Thus, Nickel is a ferromagnetic material and when its temperature is increased above curie temperature, then it becomes paramagnetic.
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Magnetism and Matter
154354
Ferromagnetic materials used in a transformer must have
1 low permeability and high hysteresis loss
2 high permeability and low hysteresis loss
3 high permeability and high hysteresis loss
4 low permeability and low hysteresis loss
Explanation:
B Ferromagnetic materials core used in transformer must have high permeability so that it may show a high value of magnetic induction and it should have low hysteresis loss in order to decrease the energy losses.
Manipal UGET-2009]**#Karnataka (CET)-2009
Magnetism and Matter
154359
Magnetic susceptibility of diamagnetic materials is of the order of (SI units)
1 $+10^{5}$
2 $+10^{-4}$ to $10^{-2}$
3 $+10^{-5}$
4 $-10^{-5}$
Explanation:
D The magnetic susceptibility of a diamagnetic substance is negative and very slightly less than one and of the order of $10^{-5}$.
UPSEE - 2016
Magnetism and Matter
154360
Permanent magnet has properties retentivity and coercivity respectively,
1 low-low
2 high - high
3 high - low
4 low - high
Explanation:
B The materials suitable for permanent magnets must have high retentivity and high permeability. Also, these materials should have high coercivity so that external magnetic fields in opposite directions can not easily demagnetize the magnet.
UPSEE - 2015
Magnetism and Matter
154363
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond curie temperature, then it will show
1 paramagnetism
2 diamagnetism
3 anti-ferromagnetism
4 no magnetic property
Explanation:
A All the ferromagnetic material becomes paramagnetic material above the curie temperature. Thus, Nickel is a ferromagnetic material and when its temperature is increased above curie temperature, then it becomes paramagnetic.
154354
Ferromagnetic materials used in a transformer must have
1 low permeability and high hysteresis loss
2 high permeability and low hysteresis loss
3 high permeability and high hysteresis loss
4 low permeability and low hysteresis loss
Explanation:
B Ferromagnetic materials core used in transformer must have high permeability so that it may show a high value of magnetic induction and it should have low hysteresis loss in order to decrease the energy losses.
Manipal UGET-2009]**#Karnataka (CET)-2009
Magnetism and Matter
154359
Magnetic susceptibility of diamagnetic materials is of the order of (SI units)
1 $+10^{5}$
2 $+10^{-4}$ to $10^{-2}$
3 $+10^{-5}$
4 $-10^{-5}$
Explanation:
D The magnetic susceptibility of a diamagnetic substance is negative and very slightly less than one and of the order of $10^{-5}$.
UPSEE - 2016
Magnetism and Matter
154360
Permanent magnet has properties retentivity and coercivity respectively,
1 low-low
2 high - high
3 high - low
4 low - high
Explanation:
B The materials suitable for permanent magnets must have high retentivity and high permeability. Also, these materials should have high coercivity so that external magnetic fields in opposite directions can not easily demagnetize the magnet.
UPSEE - 2015
Magnetism and Matter
154363
Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond curie temperature, then it will show
1 paramagnetism
2 diamagnetism
3 anti-ferromagnetism
4 no magnetic property
Explanation:
A All the ferromagnetic material becomes paramagnetic material above the curie temperature. Thus, Nickel is a ferromagnetic material and when its temperature is increased above curie temperature, then it becomes paramagnetic.