19 + Mcqs in Electromagnetic Theory Page 1 McqOptions

Explore topic-wise MCQs in Electrical Engineering.

Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ?

"The total electric flux through any closed surface surrounding charges is equal to the amount oflcharge enclosed". The above statement is associated with

The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to percent of itsvalue.

While comparing magnetic and electric circuits, the flux of magnetic circuit is compared with which parameter of electrical circuit ?

A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit weber turns.

A conductor 2 metres long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be

The polarity of the induced voltage can be determined by using the left-hand generator rule.

Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is

The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is_______Vs

The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the in ductance will be

Those materials are well suited for making permanent magnets which haveretentivity and _coercivity.

Those magnetic materials are best suited for making armature and transformer cores which havepermeability and___hystersis loss.

"The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface". The above statement is associated with

As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it

When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0.

The number of Faraday tubes of flux passing through a surface in an electric field is called

at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point.

The time constant and R-C circuit may also be defined as the time during which the charging current falls to ______ percent of its initial maximum value,

Explore topic-wise MCQs in Electrical Engineering.

Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ?

"The total electric flux through any closed surface surrounding charges is equal to the amount oflcharge enclosed". The above statement is associated with

The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its______value.

While comparing magnetic and electric circuits, the flux of magnetic circuit is compared with which parameter of electrical circuit ?

A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit weber turns.

A conductor 2 metres long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be

The polarity of the induced voltage can be determined by using the left-hand generator rule.

Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is

The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is_______Vs

The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the in ductance will be

Those materials are well suited for making permanent magnets which have______retentivity and _______coercivity.

Those magnetic materials are best suited for making armature and transformer cores which have____permeability and_______hystersis loss.

"The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface". The above statement is associated with

As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it

When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0.

The number of Faraday tubes of flux passing through a surface in an electric field is called

at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point.

The time constant and R-C circuit may also be defined as the time during which the charging current falls to ______ percent of its initial maximum value,

The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to percent of itsvalue.

Those materials are well suited for making permanent magnets which haveretentivity and _coercivity.

Those magnetic materials are best suited for making armature and transformer cores which havepermeability and___hystersis loss.