22 Jun A+ Answers
1. To obtain the greatest possible accuracy in a timing device, you should use a
A. digital timer operated from a crystal-controlled oscillator.
B. 3905 IC operated through an electronic inductor.
C. timer with a unijunction transistor in its circuit.
D. 555 IC operated through an electronic capacitor.
2. You have two methods of locating faults in electronic systems – signal tracing and
signal
A. dumping. C. shaping.
B. injecting. D. squaring.
3. Which one of the following distinguishes a switching power supply from other power
suppliers?
A. Simpler circuitry C. Higher output voltage
B. Smaller transformer D. Elimination of diode rectifier
4 Which of the following devices is connected internally to an output pin of a 555 IC?
A. RS flip-flop C. Reset transistor
B. Power amplifier D. Threshold comparator
5. In troubleshooting a pulse circuit by waveform comparison, you should use
A. a logic probe. C. an oscilloscope.
B. a logic scope. D. a pulser.
6. The most convenient and least time-consuming method of determining an amplifier’s
ability to pass a pulse in a digital circuit is to use the
A. sine-wave test. C. VOM test.
B. square-wave test. D. Wattmeter test.
7. “An output of a high from a logic gate having a high on only one input” describes the
operation of
A. an AND gate. C. an NOR gate.
B. a NOT gate. D. ah XOR gate.
8. A one-shot multivibrator contains two transistors. What is the condition of the
transistors in the standby state?
A. Input transistor is cut off; output transistor is saturated.
B. Output transistor is cut off; input transistor is saturated.
C. Both transistors are saturated.
D. Both transistors are cut off.
9. You would use a logic analyzer to test
A. voltage values. C. an ac amplifier.
B. a digital integrated circuit. D. a system’s power supply.
10. When you hold down the switch in most types of pulsers, the instrument will generate a
A. clock waveform. C. single pulse.
B. sine wave. D. triangular wave.
11. The input trigger pulse to the 3905 timer must be
A. negative-going to pin 1. C. negative-going to pin 2.
B. positive-going to pin 1. D. positive-going to pin 2.
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.