Electrical level 2 Module 2 test 1 All
Questions Correctly Answered
Average Value - ANS 0.637x peak value
RMS value - ANS .707 x Peak Value
Inductance - ANS Opposes the change of current flow
A
Self Inductance - ANS Ability of a conductor to induce voltage in itself when the
VI
current changes
Symbol for inductance - ANS L
TU
The greater the number of turns the greater the - ANS Inductance is.
In an inductive circuit - ANS Voltage leads Current.
IS
Inductive resistance - ANS 2pifl
OM
Capacitor - ANS Device that stores electric charge
Larger plates will produce a - ANS Greater Capacitance
Current leads voltage in a - ANS Capacitive Circuit
NA
Impedance - ANS Total opposition of current flow
Circuit contains both inductance and resistance the current - ANS Will lag the voltage
JP
by some angle between zero and 90 degrees
In a circuit containing resistance only - ANS The circuits are in phase
In a circuit of our capacitance - ANS The current leads voltage by 90 degrees
In a circuit with both resistance and capacitance - ANS The current will lead the
voltage by some angle between zero and 90 degrees
, True Power - ANS Power consumed by resistance
Apparent Power - ANS Product of the source voltage and total current
Reactive Power is - ANS Always 90 degrees out of phase with true power
Transformer - ANS Device that transfers electrical energy from one circuit to another
by electromagnetic induction
Primary winding - ANS Winding connected to the source
A
Secondary winding - ANS The winding connected to the load
VI
Like-wound transformers - ANS Secondary voltage in phase with primary
TU
Unlike-wound transformers - ANS Secondary and primary voltage are 180 degrees
out of phase
Isolation transformers - ANS Are wound so that the primary and secondary voltages
IS
are equal
Frequency - ANS Number of cycles current undergoes per second
OM
Peak voltage in a circuit who's rms is 120VAC - ANS 170volts
Circuit of pure resistance - ANS Voltage and current are in phase
NA
When current increase in AC circuit the inductance - ANS Reduces the current
Pure inductance circuit - ANS The voltage and current are 90 degrees out of phase
Capacitance is measured in - ANS Farads
JP
Power consumed by resistance - ANS Is called true power
Any exposed live parts must be guarded if they are operating at - ANS 50V or more
between terminals
Which of the following are most likely to use dynamic braking? - ANS Forklifts
Questions Correctly Answered
Average Value - ANS 0.637x peak value
RMS value - ANS .707 x Peak Value
Inductance - ANS Opposes the change of current flow
A
Self Inductance - ANS Ability of a conductor to induce voltage in itself when the
VI
current changes
Symbol for inductance - ANS L
TU
The greater the number of turns the greater the - ANS Inductance is.
In an inductive circuit - ANS Voltage leads Current.
IS
Inductive resistance - ANS 2pifl
OM
Capacitor - ANS Device that stores electric charge
Larger plates will produce a - ANS Greater Capacitance
Current leads voltage in a - ANS Capacitive Circuit
NA
Impedance - ANS Total opposition of current flow
Circuit contains both inductance and resistance the current - ANS Will lag the voltage
JP
by some angle between zero and 90 degrees
In a circuit containing resistance only - ANS The circuits are in phase
In a circuit of our capacitance - ANS The current leads voltage by 90 degrees
In a circuit with both resistance and capacitance - ANS The current will lead the
voltage by some angle between zero and 90 degrees
, True Power - ANS Power consumed by resistance
Apparent Power - ANS Product of the source voltage and total current
Reactive Power is - ANS Always 90 degrees out of phase with true power
Transformer - ANS Device that transfers electrical energy from one circuit to another
by electromagnetic induction
Primary winding - ANS Winding connected to the source
A
Secondary winding - ANS The winding connected to the load
VI
Like-wound transformers - ANS Secondary voltage in phase with primary
TU
Unlike-wound transformers - ANS Secondary and primary voltage are 180 degrees
out of phase
Isolation transformers - ANS Are wound so that the primary and secondary voltages
IS
are equal
Frequency - ANS Number of cycles current undergoes per second
OM
Peak voltage in a circuit who's rms is 120VAC - ANS 170volts
Circuit of pure resistance - ANS Voltage and current are in phase
NA
When current increase in AC circuit the inductance - ANS Reduces the current
Pure inductance circuit - ANS The voltage and current are 90 degrees out of phase
Capacitance is measured in - ANS Farads
JP
Power consumed by resistance - ANS Is called true power
Any exposed live parts must be guarded if they are operating at - ANS 50V or more
between terminals
Which of the following are most likely to use dynamic braking? - ANS Forklifts
