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NEIEP 300 FINAL EXAM LATEST ACTUAL EXAM
140 QUESTIONS AND CORRECT DETAILED
ANSWERS|ALREADY GR ADED A+
A door motor circuit has a 230 VDC power supply that provides 7.38 amps of current. What is the total circuit resistance? - ANSWER- 31.17 ohms
At which setting would you set the meter dial to read Resistance? - ANSWER- Ω
If the voltage source for a circuit is 68 volts, and the resistance is 45 ohms, what is the total circuit current? - ANSWER- 1.511 Amps
How much power is produced by 500 mA of current through a circuit with 4.7K ohms of resistance? - ANSWER- 1175 Watts
What will happen to the current in a circuit of constant voltage if the resistance is doubled? - ANSWER- The current will be halved
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If voltage and resistance are known quantities, what is the correct formula for finding current? - ANSWER- I = E/R
Which of the following formulas are correct for finding power in watts used in an electrical circuit? - ANSWER- P = I2xR
VOM is another name for a: - ANSWER- Multimeter
What will happen to the current in a circuit of constant resistance if the voltage is doubled? - ANSWER- The current will double
The product of voltage and current is: - ANSWER- Power
Which of the following statements best describes how to measure voltage in a circuit? - ANSWER- The meter must be in parallel with the voltage being measured.
What does the designation DPDTNO switch represent? - ANSWER- Double-pole, Double-Throw, Normal Open switch
Which of the following statements is correct regarding switches?
- ANSWER- Contact wear is always greater on DC switches
than AC switches 2 / 3
Which of the following describes the most important characteristic of how switches are rated? - ANSWER- Rated by maximum current the switch can pass when closed
Which of the following refers to the moveable contacts on a switch? - ANSWER- Poles
Of the following resistors, which has a single fixed terminal and a shaft-driven, movable contact? - ANSWER- Rheostat
Of the following, which type of switch would normally be found at a terminal landing? - ANSWER- Unidirectional limit switch
Thermistors possess which of the following qualities? - ANSWER- They have a negative or a positive temperature coefficient.
A wire-wound resistor in a series circuit with a supply voltage of 45 VDC has a nominal value of 64 ohms. It develops a problem which results in it being 40% partially shorted. The circuit fuse is rated at 1 amp. Which of the following statements is correct? - ANSWER- This represents an overload condition that will open the fuse
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