ELECTRICAL LEVEL 2 TEST 1 EXAM QUESTIONS

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ELECTRICAL LEVEL 2 TEST 1 EXAM QUESTIONS

Qs and Ans - Expert- Explanation - ing score -32 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: In a circuit of our capacitance

Answer:

The current leads voltage by 90 degrees

Question 2: Current leads voltage in a

Answer:

Capacitive Circuit

Question 3: Transformer

Answer:

Device that transfers electrical energy from one circuit to another by electromagnetic induction

Question 4: Capacitor

Answer:

Device that stores electric charge

Question 5: In a circuit containing resistance only

Answer:

The circuits are in phase

Question 6: Larger plates will produce a

Answer:

Greater Capacitance

Question 7: Pure inductance circuit

Answer:

The voltage and current are 90 degrees out of phase

Question 8: Symbol for inductance

Answer:

L

Question 9: Frequency

Answer:

Number of cycles current undergoes per second

Question 10: Unlike-wound transformers

Answer:

Secondary and primary voltage are 180 degrees out of phase

Question 11: In a circuit with both resistance and capacitance

Answer:

The current will lead the voltage by some angle between zero and 90 degrees

Question 12: Secondary winding

Answer:

The winding connected to the load

Question 13: Capacitance is measured in

Answer:

Farads

Question 14: Self Inductance

Answer:

Ability of a conductor to induce voltage in itself when the current changes

Question 15: Average Value

Answer:

0.637x peak value

Question 16: Inductive resistance

Answer:

2pifl

Question 17: Isolation transformers

Answer:

Are wound so that the primary and secondary voltages are equal

Question 18: Impedance

Answer:

Total opposition of current flow

Question 19: Power consumed by resistance

Answer:

Is called true power

Question 20: RMS value

Answer:

.707 x Peak Value

Question 21: Reactive Power is

Answer:

Always 90 degrees out of phase with true power

Question 22: Inductance

Answer:

Opposes the change of current flow

Question 23: Primary winding

Answer:

Winding connected to the source

Question 24: In an inductive circuit

Answer:

Voltage leads Current.

Question 25: When current increase in AC circuit the inductance

Answer:

Reduces the current

Question 26: The greater the number of turns the greater the

Answer:

Inductance is.

Question 27: Apparent Power

Answer:

Product of the source voltage and total current

Question 28: Circuit of pure resistance

Answer:

Voltage and current are in phase

Question 29: Peak voltage in a circuit who's rms is 120VAC

Answer:

170volts