PPME BLOCK 1 TO 7 FULL SOLUTION 2026
QUESTIONS WITH ANSWERS GRADED A+
◉ under very low levels of ambient light Answer:
◉ Sensor Fundamentals Answer:
◉ A multistatic sensor is a sensor ______________. Answer:
◉ that has multiple receivers and/or transmitters Answer:
◉ An antenna typically provides gain to a sensor system by
______________. Answer:
◉ directing and/or focusing the signal's energy Answer:
◉ Interference may be ______________. Answer:
◉ constructive and destructive Answer:
,◉ The ratio of the highest deviation of a value represented by the
sensor to the actual value is used to determine a sensor's
______________. Answer:
◉ Accuracy Answer:
◉ Measuring the output of a sensor in response to an accurately
known input is known as ______________. Answer:
◉ Calibration Answer:
◉ Which statement is true? Answer:
◉ The sensitivity of a sensor is the change in output of the sensor
per unit change in the parameter being measured. Answer:
◉ A bistatic sensor is defined as a sensor system that has
______________. Answer:
◉ a transmitter in one location and the receiver in another Answer:
◉ Gain refers to the increase of a transmitted signal's power per unit
area caused by ______________. Answer:
,◉ focusing a transmitted signal's power in a certain direction, or
directions Answer:
◉ Understanding the Frequency Spectrum Answer:
◉ How does the speed of sound through water compare with the
speed of sound through air? Answer:
◉ Approx. 4.4 times faster in water than in air Answer:
◉ Gamma rays are a good example of ______________. Answer:
◉ high frequency and low wavelength Answer:
◉ Sensor size is directly proportional to wavelength. Answer:
◉ True Answer:
◉ While we can only see and/or hear a small fraction of the
exploitable frequency spectrum, we can employ sensors to make use
of the remainder of the spectrum. Answer:
, ◉ True Answer:
◉ A short wave radio signal at 20 MHz would exist in which
standard military band? Answer:
◉ A-band Answer:
◉ A frequency of 1 GHz is how many times higher than 1 KHz?
Answer:
◉ One million Answer:
◉ Which of the following is an alternative way of writing 7.4 x 108
Hz? Answer:
◉ 740 MHz Answer:
◉ The speed of sound through water is most affected by
______________. Answer:
◉ Temperature Answer:
◉ Sensor Challenges for Modern Combat Systems Answer:
QUESTIONS WITH ANSWERS GRADED A+
◉ under very low levels of ambient light Answer:
◉ Sensor Fundamentals Answer:
◉ A multistatic sensor is a sensor ______________. Answer:
◉ that has multiple receivers and/or transmitters Answer:
◉ An antenna typically provides gain to a sensor system by
______________. Answer:
◉ directing and/or focusing the signal's energy Answer:
◉ Interference may be ______________. Answer:
◉ constructive and destructive Answer:
,◉ The ratio of the highest deviation of a value represented by the
sensor to the actual value is used to determine a sensor's
______________. Answer:
◉ Accuracy Answer:
◉ Measuring the output of a sensor in response to an accurately
known input is known as ______________. Answer:
◉ Calibration Answer:
◉ Which statement is true? Answer:
◉ The sensitivity of a sensor is the change in output of the sensor
per unit change in the parameter being measured. Answer:
◉ A bistatic sensor is defined as a sensor system that has
______________. Answer:
◉ a transmitter in one location and the receiver in another Answer:
◉ Gain refers to the increase of a transmitted signal's power per unit
area caused by ______________. Answer:
,◉ focusing a transmitted signal's power in a certain direction, or
directions Answer:
◉ Understanding the Frequency Spectrum Answer:
◉ How does the speed of sound through water compare with the
speed of sound through air? Answer:
◉ Approx. 4.4 times faster in water than in air Answer:
◉ Gamma rays are a good example of ______________. Answer:
◉ high frequency and low wavelength Answer:
◉ Sensor size is directly proportional to wavelength. Answer:
◉ True Answer:
◉ While we can only see and/or hear a small fraction of the
exploitable frequency spectrum, we can employ sensors to make use
of the remainder of the spectrum. Answer:
, ◉ True Answer:
◉ A short wave radio signal at 20 MHz would exist in which
standard military band? Answer:
◉ A-band Answer:
◉ A frequency of 1 GHz is how many times higher than 1 KHz?
Answer:
◉ One million Answer:
◉ Which of the following is an alternative way of writing 7.4 x 108
Hz? Answer:
◉ 740 MHz Answer:
◉ The speed of sound through water is most affected by
______________. Answer:
◉ Temperature Answer:
◉ Sensor Challenges for Modern Combat Systems Answer:
