Question 1

A measured value of 10mW will result in what dBm power level?

Accepted Answer

A)  -3dBm 
B)  0dBm 
C)  10dBm 
D)  3dBm 
A)  -3dBm 
B)  0dBm 
C)  10dBm 
D)  3dBm C

Question 2

Determine the voltage level required to produce a +10dBm level. Assume a 600 Ohm system

Accepted Answer

A)  .775V 
B)  2.45V 
C)  1.947V 
D)  none of the above 
A)  .775V 
B)  2.45V 
C)  1.947V 
D)  none of the above B

Question 3

The oscillator design that is characterized by having a "tapped" inductor is the:

Accepted Answer

A)  Colpitts design 
B)  Clapp design 
C)  Crystal design 
D)  Hartley design 
A)  Colpitts design 
B)  Clapp design 
C)  Crystal design 
D)  Hartley design D

Question 4

If the noise produced by a resistor in a radio receiver is 2.4 uV and the resistance is then doubled, the resulting noise produced by the new resistance is approximately:

Accepted Answer

A)  4.8 uV 
B)  2.4 uV 
C)  3.4 uV 
D)  1.2 uV 
A)  4.8 uV 
B)  2.4 uV 
C)  3.4 uV 
D)  1.2 uV

Question 5

The repetitive exchange of energy from the magnetic field of an inductor to an electric charge on a capacitor in a resonant circuit is known as:

Accepted Answer

A)  the piezoelectric effect 
B)  Barkhausen criteria 
C)  the flywheel effect 
D)  frequency synthesis 
A)  the piezoelectric effect 
B)  Barkhausen criteria 
C)  the flywheel effect 
D)  frequency synthesis

Question 6

The oscillator design that has the highest frequency stability is the:

Accepted Answer

A)  Hartley design 
B)  Clapp design 
C)  Crystal design 
D)  Colpitts design 
A)  Hartley design 
B)  Clapp design 
C)  Crystal design 
D)  Colpitts design

Question 7

When using a noise diode generator in making noise measurements, the noise diode's current in ma. is numerically equal to the:

Accepted Answer

A)  noise ratio of the DUT only if its impedance is 50 ohms. 
B)  noise figure in decibels of the DUT only if its impedance is 50 ohms. 
C)  noise ratio of the DUT no matter what its impedance is. 
D)  noise figure in db of the DUT no matter what its impedance is. 
A)  noise ratio of the DUT only if its impedance is 50 ohms. 
B)  noise figure in decibels of the DUT only if its impedance is 50 ohms. 
C)  noise ratio of the DUT no matter what its impedance is. 
D)  noise figure in db of the DUT no matter what its impedance is.

Question 8

A 4.7 mH inductor has a Q of 3500 at a frequency of 50 MHz. Its internal resistance is approximately:

Accepted Answer

A)  2.37 milliohms. 
B)  67.14 ohms. 
C)  14.9 milliohms. 
D)  422 ohms. 
A)  2.37 milliohms. 
B)  67.14 ohms. 
C)  14.9 milliohms. 
D)  422 ohms.

Question 9

Hartley's law states that:

Accepted Answer

A)  amount of information is directly proportional to both the system bandwidth and time of transmission. 
B)  the time of transmission is directly proportional to both the system bandwidth and the amount of information. 
C)  the bandwidth is directly proportional to both the amount of information and the amount of noise present. 
D)  bandwidth is directly proportional to both the amount of information and time of transmission. 
A)  amount of information is directly proportional to both the system bandwidth and time of transmission. 
B)  the time of transmission is directly proportional to both the system bandwidth and the amount of information. 
C)  the bandwidth is directly proportional to both the amount of information and the amount of noise present. 
D)  bandwidth is directly proportional to both the amount of information and time of transmission.

Question 10

A device that converts energy from one form to another is called a:

Accepted Answer

A)  transmitter 
B)  detector 
C)  transducer 
D)  modulator 
A)  transmitter 
B)  detector 
C)  transducer 
D)  modulator

Question 11

A transistor amplifier has a measured S/N power of 25 at its input and 8 at its output. Its noise figure in decibels is:

Accepted Answer

A)  9.10 
B)  118 
C)  17 
D)  4.95 
A)  9.10 
B)  118 
C)  17 
D)  4.95

Question 12

The device which superimposes information onto a high frequency signal for transmission is called:

Accepted Answer

A)  the carrier 
B)  a demodulator 
C)  a modulator 
D)  the intelligence 
A)  the carrier 
B)  a demodulator 
C)  a modulator 
D)  the intelligence

Question 13

A figure of merit that best describes how much noise a device creates is known as:

Accepted Answer

A)  Noise figure. 
B)  Friis noise. 
C)  effective noise bandwidth. 
D)  signal to noise ratio. 
A)  Noise figure. 
B)  Friis noise. 
C)  effective noise bandwidth. 
D)  signal to noise ratio.

Question 14

Convert 300W to dBW

Accepted Answer

A)  -10.0 dBW 
B)  54.77 dBW 
C)  -24.77 dBW 
D)  24.77 dBW 
A)  -10.0 dBW 
B)  54.77 dBW 
C)  -24.77 dBW 
D)  24.77 dBW

Question 15

Ultra High Frequency signals are between:

Accepted Answer

A)  30 Mhz and 300 MHz. 
B)  300 Mhz and 3 GHz. 
C)  3 Mhz and 30 MHz. 
D)  3 Mhz and 30 GHz. 
A)  30 Mhz and 300 MHz. 
B)  300 Mhz and 3 GHz. 
C)  3 Mhz and 30 MHz. 
D)  3 Mhz and 30 GHz.

Question 16

The oscillator design that uses two capacitors in the tank circuit is the:

Accepted Answer

A)  Clapp design 
B)  Colpitts design 
C)  Crystal design 
D)  Hartley design 
A)  Clapp design 
B)  Colpitts design 
C)  Crystal design 
D)  Hartley design

Question 17

The statement "information is proportional to bandwidth" is known as:

Accepted Answer

A)  Fourier's Law 
B)  Simpson Rule 
C)  Shannon's Law 
D)  Hartley's Law 
A)  Fourier's Law 
B)  Simpson Rule 
C)  Shannon's Law 
D)  Hartley's Law

Question 18

A laser diode outputs +8 dBm. Convert this value to Watts

Accepted Answer

A)  0.0063W 
B)  0.063W 
C)  0.00063W 
D)  0.63W 
A)  0.0063W 
B)  0.063W 
C)  0.00063W 
D)  0.63W

Question 19

Frequencies between 3 and 30 Mhz are referred to as:

Accepted Answer

A)  Very High Frequencies (VHF'). 
B)  High Frequencies (HF). 
C)  Medium Frequencies (MF). 
D)  Ultra High Frequencies (UHF') 
A)  Very High Frequencies (VHF'). 
B)  High Frequencies (HF). 
C)  Medium Frequencies (MF). 
D)  Ultra High Frequencies (UHF')

Question 20

A technique for resolving complex repetitive waveforms into sine or cosine waves and a dc component is known as:

Accepted Answer

A)  Frequency Analysis 
B)  Fourier Analysis 
C)  Armstrong's Principle 
D)  Harmonic Analysis 
A)  Frequency Analysis 
B)  Fourier Analysis 
C)  Armstrong's Principle 
D)  Harmonic Analysis

A measured value of 10mW will result in what dBm power level?

Determine the voltage level required to produce a +10dBm level. Assume a 600 Ohm system

The oscillator design that is characterized by having a "tapped" inductor is the:

If the noise produced by a resistor in a radio receiver is 2.4 uV and the resistance is then doubled, the resulting noise produced by the new resistance is approximately:

The repetitive exchange of energy from the magnetic field of an inductor to an electric charge on a capacitor in a resonant circuit is known as:

The oscillator design that has the highest frequency stability is the:

When using a noise diode generator in making noise measurements, the noise diode's current in ma. is numerically equal to the:

A 4.7 mH inductor has a Q of 3500 at a frequency of 50 MHz. Its internal resistance is approximately:

Hartley's law states that:

A device that converts energy from one form to another is called a:

A transistor amplifier has a measured S/N power of 25 at its input and 8 at its output. Its noise figure in decibels is:

The device which superimposes information onto a high frequency signal for transmission is called:

A figure of merit that best describes how much noise a device creates is known as:

Convert 300W to dBW

Ultra High Frequency signals are between:

The oscillator design that uses two capacitors in the tank circuit is the:

The statement "information is proportional to bandwidth" is known as:

A laser diode outputs +8 dBm. Convert this value to Watts

Frequencies between 3 and 30 Mhz are referred to as:

A technique for resolving complex repetitive waveforms into sine or cosine waves and a dc component is known as:

Amplitude Modulation: Transmission

Amplitude Modulation: Reception

Single-Sideband Communications

Frequency Modulation: Transmission

Frequency Modulation: Reception

Communications Techniques

Digital Communications: Coding Techniques

Wired Digital Communications

Wireless Digital Communications

Network Communications

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Microwaves and Lasers

Television

Fiber Optics

Filters

Exam 1: Introductory Topics

A measured value of 10mW will result in what dBm power level?

Determine the voltage level required to produce a +10dBm level. Assume a 600 Ohm system

The oscillator design that is characterized by having a "tapped" inductor is the:

If the noise produced by a resistor in a radio receiver is 2.4 uV and the resistance is then doubled, the resulting noise produced by the new resistance is approximately:

The repetitive exchange of energy from the magnetic field of an inductor to an electric charge on a capacitor in a resonant circuit is known as:

The oscillator design that has the highest frequency stability is the:

When using a noise diode generator in making noise measurements, the noise diode's current in ma. is numerically equal to the:

A 4.7 mH inductor has a Q of 3500 at a frequency of 50 MHz. Its internal resistance is approximately:

Hartley's law states that:

A device that converts energy from one form to another is called a:

A transistor amplifier has a measured S/N power of 25 at its input and 8 at its output. Its noise figure in decibels is:

The device which superimposes information onto a high frequency signal for transmission is called:

A figure of merit that best describes how much noise a device creates is known as:

Convert 300W to dBW

Ultra High Frequency signals are between:

The oscillator design that uses two capacitors in the tank circuit is the:

The statement "information is proportional to bandwidth" is known as:

A laser diode outputs +8 dBm. Convert this value to Watts

Frequencies between 3 and 30 Mhz are referred to as:

A technique for resolving complex repetitive waveforms into sine or cosine waves and a dc component is known as:

Amplitude Modulation: Transmission

Amplitude Modulation: Reception

Single-Sideband Communications

Frequency Modulation: Transmission

Frequency Modulation: Reception

Communications Techniques

Digital Communications: Coding Techniques

Wired Digital Communications

Wireless Digital Communications

Network Communications

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Microwaves and Lasers

Television

Fiber Optics

Filters