Related Questions
What is the correct answer?
4
One of the solid structures in which the position of the atoms or ions are predetermined
What is the correct answer?
4
The greater percentage of materials is _________.
What is the correct answer?
4
What is the usual value of leakage coefficient for electrical machines?
What is the correct answer?
4
A law stating that the magnetic susceptibilities of most paramagnetic substances are inversely proportional to their absolute temperatures.
What is the correct answer?
4
A magnetizing force of 1000 AT/m will produce a flux density of __________ i
What is the correct answer?
4
The force which set ups or tends to set up magnetic flux in a magnetic circuit
What is the correct answer?
4
A negative ion results when an atom gains an additional
What is the correct answer?
4
Which of the following has the least number of valence electrons?
What is the correct answer?
4
Magnetic fields do not interact with
A. Moving permanent magnets
B. Stationary permanent magnets
C. Moving electric charges
D. Stationary electric charges
What is the correct answer?
4
The physical motion resulting from the forces of magnetic fields is called
What is the correct answer?
4
______ is an electromagnet with its core in the form of a close magnetic ring.
What is the correct answer?
4
A magnetic field is
A. The current flow through space around a permanent magnet
B. The force set up when current flows through a conductor
C. The force that drives current through a resistor
D. The force between the plates of a charged capacitor
What is the correct answer?
4
An alloy of 22 percent iron and 78 per cent nickel.
What is the correct answer?
4
Defined as the ratio of the volume occupied by the atoms or ions in a unit cell divided by the volume of the unit cell and is used to measure the compactness of a crystal.
A. Atomic packing factor (APF)
B. Ionic Packing Ratio (IPR)
C. Atomic compacting factor (ACF)
D. Ionic compacting ratio (ICR)
What is the correct answer?
4
The resistivity of a conductor ___________ with an increase in temperature.
What is the correct answer?
4
Magnetic field intensity is a ________ quantity.
What is the correct answer?
4
If you hold the conductor with right hand so that the stretched thumb points in the direction of the currenta then encircling fingers will give the direction of magnetic lines of force round the conductor. This is known as
A. Left hand cork screw rule
B. Right hand cork screw rule
What is the correct answer?
4
What is the unit of reluctance?
What is the correct answer?
4
How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
What is the correct answer?
4
The magnetic potential in a magnetic circuit can be measured in terms of
What is the correct answer?
4
Electric field intensity at a point is numerically equal to ________ at that point.
What is the correct answer?
4
Electric potential is a _______ quantity.
What is the correct answer?
4
If the magnetic material is located within a coil through which alternating current (60 Hz frequency) flowsa then __________ hysteresis loops will be formed
What is the correct answer?
4
Defined as a closed path in which magnetic induction or flux flows
D. Electromagnetic circuit
What is the correct answer?
4
The magnetic flux of 2000 lines is how many Maxwells?
What is the correct answer?
4
If the number of valence electrons of an atom is exactly 4a then the substance is called
What is the correct answer?
4
A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 × 10^-6
What is the correct answer?
4
When a conductor is stationary and the magnetic field is moving or changing the emf induced is called
A. Statically induced emf
D. Dynamically induced emf
What is the correct answer?
4
The emf produced in a wire by its motion across a magnetic field does not depend upon the
C. Orientation of the wire
D. Flux density of the field
What is the correct answer?
4
A germanium atom has an atomic weight of72. How many neutrons are there?