A. it corrodes easily
B. it has high permeability
C. it has high specific gravity
D. it has low permeability
Correct Answer: it has low permeability ✔
Last Updated: December 17, 2018
Related MCQs
- When an iron piece is placed in a magnetic field__________?
- The ratio of intensity of magnetisation to the magnetisation force is known as__________?
- Materials subjected to rapid reversal of magnetism should have__________?
- The unit of relative permeability is__________?
- Indicate which of the following material does not retain magnetism permanently
- The force between two long parallel conductors is inversely proportional to__________?
- The left hand rule correlates to__________?
- A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be__________?
- The use of permanent magnets is. not made in__________?
- Two infinitely long parallel conductors in vacuum any separated 1 metre between centers >then a current of 1 ampere flows the. uk each conductor, produce on each other a force of__________?
- The main constituent of permalloy is__________?
- Paramagnetic materials have relative permeability__________?
- Gilbert is a unit of__________?
- Which of the following is a ferromagnetic material ?
- Substances which have permeability less than the permeability of free space are known as__________?
- In the left hand rule, forefinger always represents__________?
- Ferrites are a sub-group of__________?
- Reciprocal of permeability is__________?
- Which of the following is the unit of magnetic flux density ?
- The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields__________?
- The relative permeability is less than unity is case of__________?
- Which of the following is not a unit of flux?
- One telsa is equal to__________?
- The magnetism left in the iron after exciting field has been removed is known as__________?
- Which of the following is expected to have the maximum permeability ?
- One maxwell is equal to__________?
- Out of the following statements, concerning an electric field, which statement is not true ?
- Susceptibility is positive for__________?
- When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon__________?
- When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle?
- A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be__________?
- The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength ?
- Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be__________?
- A 200 turn coil having an axial length of 30 mm and a radius of 10 mm is pivoted in a magnetic field having a flux density of 0.8 T. If the coil carries a current of 0.5 A, the torque acting on the coil will be__________?
- A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ?
- Unit for quantity of electricity is__________?
- What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?
- The unit of flux is the same as that of__________?
- The commonly used material for shielding or screening magnetism is__________?
- The Biot-savart’s law is a general modification of__________?
- If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity?
- What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200 ?
- The materials are a bit inferior conductors of magnetic flux than air
- he retentivity (a property) of material is useful for the construction of__________?
- he retentivity (a property) of material is useful for the construction of__________?
- A permanent magnet__________?
- The relative permeability of materials is not constant
- A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be__________?
- Magnetic moment is a__________?
- Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials
- A keeper is used to__________?