When a battery is connected across a coil and switch initially closed the

On a Photocell the positive potential of the supply source is connected to

Directed drift means

The SI unit of electrical charge is

An electron is a particle which

Root mean square

The max. Value of voltage in either (+ve) or (– ve) direction is

What magnetic properties is associated with soft iron

The 4th shell (N) has a maximum of

The peak value of an aircraft 115v single phase is

The process used to make some non-conducting liquids conduct electricity is

Their relative permeability of a diamagnetic is

Magnetism is: the property of a material which enables it to

Thermocouples generally can be subjected to

The capacity of a battery is measured in

Therefore Electric current Flow can be said to

The rate of flow of charge (Q

The inductance of a coil increases as

Energy contained by an electron by virtue of its motion is

The two ends which are regain of concentrated lines of force are called

When a capacitor is fully charged and the source voltage is equaled by the counter electromotive force (back-EMF) across the capacitor, the electrostatic field between the plates of the capacitor is

Microphone is an example of voltage produced

Artificial magnets are

the most common type used at the A/C

The 1st shell (K) has a maximum of

The chemical action that occurs in the cell while the current is flowing causes hydrogen bubbles to form on the surface of the cathode: this action is

Magnetic field strength unit is

A capacitor is a device that stores electrical energy in

Line voltage with a delta type connection will be

Through which material will magnetic lines of force pass the most readily

The inductance of a coil is directly proportional to

Since the electrostatic field is maximum the energy stored in the dielectric

The field about a charged body is generally represented by lines which are referred to as

When a ferrite core is placed inside a coil, the flux density

The theory of magnetism that corresponds to the direction rotation of Atom within a material is called

The atomic number of an element is dependent upon the

The characteristics of an electrical conductor opposes change in current

The relation between the distance between the plates and the charge is

Capacitors in Parallel

The time constant of the inductor is =

On an aircraft DC generator the pole pieces are

Lead Acid Batteries should

piezoelectricity cell produces electricity when subjected to

Thermocouple is an example of electricity generated by

Mobile electrons means

The type of medium that is the best electrical conductor is

In SI units, permeability is measured in

Peak value

A field twice as strong, cutting twice the number of turn will induce

Alternating polarity from an alternator takes on a distinct shape, known as

Two inductive coils are close to each other placed 90 degrees the number of flux density is

Additional generator poles in a DC motors are provided

When conductor is cut by magnetic line of force, an EMF is induced

➢ The atom that gives up some of its electrons is

To decrease the arcing at the brushes in a high output generators we

Elements whose atoms have fewer than 4 electrons in their valency shell are:

The unit of flux density is the

What is the production of electricity by pressure commonly known as

Dielectric breakdown force is measured in

Square-shaped waveforms always have crest and form factors equal to 1, since

The current consumed is decreased as the

A vacuum is a medium :

Split phase means

The amount of magnetic flux per unit cross sectional area is known as

The electrolyte is, a solution which

current can be calculated by the formula

The capacity in (ampere-hours) will depend upon

One of the following is not the characteristic of magnetic lines of force

The relationship between absolute permeability μ and relative permeability, μr and vacuum permeability μ0 is defined by the formula

The form factor of an AC waveform can be found by

Fleming’s Left Hand (Motor) Rule

Number of cycle completed per second

Armature reaction is when

The speed of a series motor is dependent

If a DC shunt motor lost its residual magnetism it would

In the series motor, the field windings, consisting of a relatively

If the heavy mechanical load is removed from a series motor the speed will

This opposition to current flow is known as resistance (R), and the unit of measure is the

An electrolyte liquid is

The opposition that a material offers to the magnetic lines of force is

The degree of magnetization of a material that responds linearly to an applied magnetic field is

Relative permeability of steel is in the range

the permeability of free space is

Primary Cell is one in which the chemical action eats away one of the electrodes, usually the

The type of the capacitor used where large amount of capacitance required is called

conductivity is the inverse of

The area of the Hysteresis Loop indicates

If 2 batteries each of 10 V, 20 ampere-hours in parallel they supply 10 ohm load what is the duration they will feed =

Plasma is the state of matter where some

Magnetic lines of force pass through

Disadvantage of using vents in a battery can be solved by

The fundamental negative charge is the

Source voltage is the

Electron arrangement of potassium which has 19 electrons is

The difference in potential between the electrodes in wet cell and dry cell depends primarily on the

In A variable capacitor (when the plates are over- lapped the capacitance will be

The 3 conditions required to produce electricity by magnetism are

The intensity of a magnetic field is

The coil ends connected to adjacent commutator segment

A sine wave of RMS value 7.06 volts has a peak to peak value of