Ten Essential Skills for Electrical EngineersRF Cafe Quiz #60

All RF Cafe quizzes would make perfect fodder in employment interviews for technicians or engineers - particularly those who are fresh out of school or are relatively new to the work world. Come to think of it, they would make equally excellent study material for the same persons who are going to be interviewed for a job.

Note: Some material based on books have quoted passages.

This quiz is based on the information presented in Ten Essential Skills for Electrical Engineers, by Barry L. Dorr.

Note: Some of these books are available as prizes in the monthly RF Cafe Giveaway.

Now, on to the quiz:

1.  What can be the result on digital signals when signal reflections exist between source and load?

a)  Erratic clocking
b)  Garbled data
c)  Overstressing of components
d)  All the above

2.  What causes signal reflections?

a)  A current mirror circuit in the source
b)  A current mirror circuit in the load
c)  An impedance mismatch between the source and the load
d)  Buried circuit traces

3.  Why is sitting at the head of the table during a group interview the best position?

b)  It allows you to address everyone eye-to-eye at once
c)  It forces everyone else to enter first
d)  It is usually closest to the door, facilitating a hasty retreat

4.  What is 'statistical independence' when referring to component failure rates?

a)  The failure of one component has no influence on the failure of any other component
b)  The failure of one component influences the failure of other components
c)  The calculated failure rate is not likely to be erroneous
d)  The calculated failure rate is likely to be erroneous

5.  What parameter does the Smith Chart represent?

a)  Complex reflection coefficient
b)  Vector voltage
c)  Tensor susceptance
d)  All the above

6.  What is the difference between a passive and an active analog filter?

a)  Passive versus active components
b)  Analog versus digital components
c)  An active filter includes a gain element (i.e., opamp) whereas a passive one does not
d)  There is no difference, fundamentally

7.  What limits the response of a FIR (finite impulse response) digital filter?

a)  Duration of the input signal
b)  Amplitude of the input signal
c)  Clock speed of the DAC
d)  Length of the filter register

8.  What property describes a first-order feedback control system?

a)  No steady state error to step input
b)  Unconditionally stable
c)  No overshoot in response to step input
d)  All the above

9.  What are the electrical circuit model equivalents of temperature and heat?

a)  Voltage and current
b)  Inductance and capacitance
c)  Resistance and conductance
d)  Power and energy

10.  What is the term for the area of negotiation between the new graduate's perspective
and the employer's perspective?

a)  Middle ground
b)  No-man's land
d)  38th parallel