FREE AND STUDY GAMES ABOUT FUNDAMENTALS OF

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FREE AND STUDY GAMES ABOUT FUNDAMENTALS OF

ELEC EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -36 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Typical application for zener diodes is as

Answer:

voltage regulator Question 2: (Refer to Figure 24.) Which statement concerning the depicted logic gate is true?

Answer:

This is an OR gate. Any time there is a 1 on any of the inputs, there will be a 1 on the output.Question 3: If electrolyte from a lead-acid battery is spilled in the battery compartment, which procedure should be followed?

Answer:

Apply sodium bicarbonate solution to the affected area followed by a water rinse.Question 4: The electrolyte of a nickel cadmium battery is highest when the battery is

Answer:

in a fully charged condition. REf)

Question 5: When different rated capacitors are connected in series in a circuit, the total capacitance is

Answer:

When capacitors of different values are connected in series, the total capacitance is less than that of the lowest rated capacitor.

Question 6: Which term means .001 ampere?

Answer:

The metric prefix 'milli-' means one thousandth. 0.001 ampere is one milliampere.

Question 7: (Refer to Figure 17.) Which of the components is a potentiometer?

Answer:

• r

ref) The component identified as 3 is a potentiometer. The component identified as 5 is a variable capacitor. The component identified as 11 is an inductor (choke).Question 8: (Refer to Figure 19.) When the throttles are retarded with only the right gear down, the warning horn will not sound if an open occurs in wire

Answer:

Wire 5 is in the landing gear warning horn ground circuit. If there is an open in this wire, the warning horn cannot get a ground when the right landing gear is down and the left gear is not down Question 9: What is the total capacitance of a certain circuit containing three capacitors with capacitances of .25 microfarad, .03 microfarad, and .12 microfarad, respectively?

(Note: C(T) = C(1) + C(2) + C(3))

Answer:

When three capacitors are connected in parallel, their total capacitance is the sum of the individual capacitances.

C(T) = C(1) + C(2) + C(3)

= 0.25 + 0.03 = 0.12

= 0.4 microfarad

Question 10: Which is correct in reference to electrical resistance?

Answer:

In a parallel electrical circuit, each bulb provides a path for current to flow. The more paths there are, the less the circuit resistance will be.

Question 11: (Refer to Figure 19.) Under which condition will a ground be provided for the warning horn through both gear switches when the throttles are closed?

Answer:

Left gear up and right gear down.ref)A ground for the landing gear warning horn is provided through both of the gear switches only when the right landing gear is down and the left landing gear is up.

Question 12: Which requires the most electrical power?

(Note: 1 horsepower = 746 watts)

Answer:

The 1/5-horsepower motor operating at 75 percent efficiency uses 198.93 watts of power.Question 13: (Refer to Figure 25.) In a functional and operating circuit, the depicted logic gate's output will be 0

Answer:

This is an AND gate. Any time one or more of the inputs do not have a 1 on them (have a 0 on them), the output will be 0. For the output to be 1, all of the inputs must be 1.Question 14: The basis for transformer operation in the use of alternating current is mutual

Answer:

A transformer operates on the basis of mutual inductance. The changing current in the primary windings produces a changing magnetic field whose flux cuts across the turns of the secondary winding and induces a voltage into it.

Question 15: What does the letter Q symbolize when measuring electrical charge?

Answer:

Coulomb. REF)The general formula for capacitance in terms of charge and voltage is C = Q/E, where: C = Capacitance measured in farads E = Applied voltage measured in volts Q = Charge measured in coulombs.

Question 16: (Refer to Figure 11.) Find the voltage across the 8-ohm resistor.

Answer:

The 8-ohm resistor, R(1), is across the full 24 volts of the battery.

Question 17: The method used to rapidly charge a nickel-cadmium battery utilizes

Answer:

Nickel-cadmium batteries can be charged rapidly by using constant voltage and varying current.Question 18: When referencing resistance in a parallel DC circuit, which of the following statements is true?

Answer:

According to Kirchhoff's current law, the current flowing in a parallel circuit is equal to the sum of the currents flowing through each of the individual branches of the circuit.Question 19: Transfer of electric energy from one circuit to another without the aid of electrical connections

Answer:

is called induction.Question 20: Unless otherwise specified, any values given for current or voltage in an AC circuit are assumed to be

Answer:

effective values. Ref) Almost all measuring instruments used for electrical system servicing measure the effective rms values of alternating current.

Question 21: The voltage drop in a circuit of known resistance is dependent on

Answer:

The voltage drop across a circuit is determined by two things: the resistance of the conductor and the amount of current flowing through it (the amperage).

Question 22: Convert farads to microfarads by

Answer:

multiplying farads by 10 to the power of 6 ref) One farad is equal to 10^6 microfarads. Example: 2 farads is equal to 2 x 10^6 (2,000,000) microfarads.Question 23: (Refer to Figure 19.) When the landing gears are up and the throttles are retarded, the warning horn will not sound if an open occurs in wire

Answer:

Wire 6 is in the ground circuit for the landing gear warning horn. The horn will not sound if there is an open in this wire when the throttles are retarded and the landing gears are up.