The group of force lines going from the N. pole to the S. pole of a magnetis called as_____________

Unit of magnetic flux is _____________

the number of magnetic field lines passing through a surface

Unit of magnetic flux density is _____________

The symbolof magnetic flux density is _____

Unit of magnetic field strength is _____________

The symbolof magnetic field strenth is _____

Current in a conductor produces a magnetic field. Force that produces the magnetic field is called as ___________

The unit of MMF is ___________

The unit of reluctance is ___________

Opposition to the establishment of a magnetic field in a material is called __________

Reluctance is denoted by letter _____

The ratio of electric displacement vector (D) in a dielectric medium to the applied electric field strength ________

The unit of Permeability is ___________

The study on the electric charges in the static or steady state condition____________

The amount of electric field passing through a surface is called ___________

The production of a magnetic field by current in a conductor ________

Tape recorders, electric motors,speakers, solenoids, and relays are based on ______

The inductance is denoted by letter _______

The unit of inductance is ___________

whenever a conductor cuts the magnetic flux lines, an ______________ is induced

the magnitude of the induced EMF is equal to the rate of change of __________ linkage with the circuit.

If current changes in coil 1, an emf is induced in coil 2

The types of induced EMF is _______ and _______________

The Conductor remains stationary and flux linked with it, is changed__________

In an ideal transformer 

A transformer transforms

Transformer works on the principle of

Transformer is a static piece which transforms electric power from one circuit to another without changing

The EMF equation of transformer is

an transformer having 1000 primary turns is connected to a 250 v ac supply . For a secondary 400 v,the number of secondary turns should be

Transformers are rated in KVA instead of KW because 

Transformer cores are laminated in order to 

The similar ends of three coils are joined together at point N is called ________

The star to star connection is called as ____

The potential difference between any line and neutral point gives the ___________

But the potential difference between any two line gives the ___________

In a star connection system I line =___________

The dissimilar ends of three phase windings are joined together is called

In a delta system, the line current is equal to the __________

Short circuit test of transformer determines___.

open circuit test of transformer determines___.

Potential transformers are used to measure ___________.

current transformers are used to measure ___________.

D.C generator is to convert mechanical energy into

Fleming’s right hand rule is applicable to

The sole purpose of a commutator in a dc generator is to

The yoke of a DC machine is made up of _______

The relationship between generated emf and applied voltage in case of dc generator is given as

In a d.c generator, the generated e.m.f is directly proportional to the ____________

The series field of a short-shunt d.c generator is excited by ____________ currents.

The open circuit characteristics of a dc generator is the curve between

The external characteristic of a dc generator is the curve between

The internal characteristic of a dc generator is the curve between

Stray losses consist of ____________

The commercial efficiency of a shunt generator is maximum when its variable loss equals ______ loss

A dc motor can be looked upon as dc generator with the power flow

The induced emf of armature conductors of a dc motor is

The current drawn by a 120V dc motor of armature resistance 0.5Ω and back emf 110V is ____________ ampere.

The shaft torque in a DC motor is less than the total armature torque because of _____in the motor

The speed of a DC motor is _________

The Ta/Ia graph of a dc series motor is a

The electrical characteristic of a dc motor is the curve between

The Eb/V ratio of d.c motor is an indication of its

If the pole flux of a d.c motor approaches zero, its speed will

As load is increased, the speed of a d.c shunt motor

Fleming’s Left hand rule is applicable to

An AC generator is an electric generator that converts mechanical energy in to

A series motor is best suited for driving