Error Log FE

Content Based Questions

How many principle views are necessary to illustrate a symmetrical object?

three

If asymmetrical, six views needed

According to the National Electric Code (NEC), lighting systems operating at this voltage are allowed to have exposed bare conductors, as long as such conductors are installed at least 2.1 m &7ft) above the finished floor.

30V

Which of the following is NOT a thermoelectric effect?

• Hall Effect

• Peltier Effect

• Thompson Effect

• Seebeck Effect

Hall Effect

What makes a linear differential equation?

A linear differential equation has no terms that contain the dependent variable or any of its derivatives to any power other than one. The variable on top (Ex. dy/dx ; y = dependent) is dependent, bottom is independent.

When sampling a given analog signal, the process by which discrete portions are used to represent the overall signal is called:

Quantization: division of a range of values of a wave into a finite number of subranges.

The generator armature loss resulting from the power lost due to the flow of current in the windings is called

copper loss

What does the following instrumentation formula represent?

• 1/ I _fullscale ;this is a capital I as in Igloo

sensitivity

When an electric field vaires with time, a current can be made to flow in a dielectric. What is the name given to such a current?

displacement current

What are load cells used to measure?

force

What is another name for the brightness of an object due to reflected light?

luminance

The internet serves four basic functions: communication, document or file transfer, information search, and reading or posting of messages to topic-specific bulletin boards. Which of the following tools allows for posting of messages on bulletin boards?

• email

• FTP

• Telnet

• Usenet

Usenet: a global bulletin board messaging system that uses internet for access.

Which is NOT a typical diode application?

• half-wave rectifier

• full-wave rectifier

• peak-clipper

• integrator

integrator

Which is NOT a popular analog filter?

• hyperbolic

• elliptic

• Butterworth

• Chebyshev

Hyperbolic

The emitter of a BJT emits ______ carriers into the _____

• minority/majority

• base/collector

majority ; base

In the transient behavior of RL and RC circuits, the time constant is the amount of time the circuit takes to reach what percentage of its steady state value?

63.2%

If a switch in an RC/RL/RLC circuit has been open for a long time, then suddenly closed, what do capacitors and inductors turn into? (Assume zero initial charge/current)

Capacitors: short circuit

Inductors: open circuit

If a switch in an RC/RL/RLC circuit has been charging for a long time (AKA DC Steady state), what do capacitors and inductors turn into?

Capacitors: open circuit

Inductors: short circuit

If you have AX=B; where A = matrix , B = vector, X = solution vector ; solve for X

X = A^-1B

What is the name for a change in the base width as a function of base-collector bias voltage in a bipolar junction transistor (BJT)?

Early Effect

What is the maximum slope at a point of the surface of a function?

The magnitude of the Gradient Vector. This also provides a normal vector to a surface.

The condition between the terminals of an ideal op-amp is called:

A virtual short circuit

If the positive terminal is grounded, “virtual ground” can be used but not always a true statement since it is dependent upon the configuration.

In transient analyses of RC and RL circuits, over how many time constants is it necessary to wait to be reasonably sure that steady state had already been reached?

5 time constants

A sequence of program instructions that controls an input/output device is known as a:

Driver

Which is NOT a component of the forward path that generates the control signal applied to the plant?

• compensators

• controllers

• amplifiers

• sensors of the controlled output

Sensors of the controlled output

The overall efficiency of the Rankine cycle is proportional to the temperature difference between the _____ and the _____.

source ; sink

According to the National Electric Code (NEC) definitions, a short circuit or ground fault would be classified as:

An overcurrent