BMET CDC SET A VOLUME 3 TEST PAPER
2026 ONE HUNDRED QUESTIONS WITH
CORRECTLY ANALYZED ANSWERS
GRADED A PLUS COMPLETE STUDY GUIDE
⩥ What metric prefix is used to describe the decimal number .001?
Answer: Milli
⩥ An atom becomes an ion by Answer: gaining or losing electrons in it
outer shell.
⩥ Which electrical term is measured in watts (W)? Answer: Power
⩥ With the alternating current (AC) method, voltage forces electrons to
flow Answer: first in one direction, then in the opposite direction,
alternating very quickly.
⩥ In 1819, Hans Christian Oersted discovered the strength of a magnetic
field can be changed by varying what characteristic? Answer: Current
through a conductor.
⩥ If a conductor lies in a magnetic field, and either the field or
conductor moves, a voltage is induced in the conductor. This effect is
called Answer: electromagnetic induction
,⩥ A resistor is used in a circuit to Answer: control current flow.
⩥ A capacitor will oppose a change in Answer: voltage and store energy
in an electrostatic field.
⩥ The two basic purposes of a transistor are either to perform as a
Answer: switch or amplify a circuit.
⩥ In a schematic diagram, how is current flow always portrayed on a
transistor when it is forward biased Answer: Against the arrow.
⩥ A Zener diode is specifically designed to operate in Answer: reverse
bias mode.
⩥ An advantage of integrated circuits (IC) is that they Answer: are more
reliable.
⩥ The number of pulses in the direct current (DC) output of a bridge
rectifier is called the Answer: ripple frequency.
⩥ What power supply circuit senses changes in output voltages and
compensates for the changes, usually within plus or minus (±) 0.1
percent? Answer: Regulator
,⩥ What wave-shaping circuit ties down the upper or lower extremity of
a waveform to a fixed direct current (DC) potential? Answer: Clamping
⩥ What is the binary equivalent of the decimal number 7? Answer: 111
⩥ What is the binary coded decimal (BCD) equivalent of the binary
number 1011? Answer: 0001 0001
⩥ Which is not a conventional problem that microwave tubes overcome
in order to be used in high power, high frequency oscillators and
amplifiers? Answer: Inter-cathode resistance
⩥ What is the wavelength if the frequency is changed from 150
megahertz (MHz) to 250 MHz? Answer: 1.2 meters
⩥ On a transmission line with an open termination, the wave is reflected
back to the source and Answer: there would be significant signal loss
⩥ What data bus was originally developed for military avionics
applications? Answer: Military Standard (MIL-STD)-155
⩥ Energy travels through a waveguide because of Answer: interaction of
magnetic and electric fields.
, ⩥ Three devices used to inject or remove energy from waveguides are
known as Answer: probes, loops, and slots.
⩥ When the modulating signal and carrier signal are combined within a
modulator, the output signal contains the Answer: carrier, upper
sideband, and lower sideband.
⩥ If the modulating audio signal is 10 kilohertz (kHz) wide, what is the
bandwidth (BW) of the transmitted amplitude modulated signal?
Answer: 20 kHz
⩥ Reducing modulation to less than 100 percent results in Answer: no
reduction in carrier power.
⩥ The oscillator output in a frequency modulation (FM) modulator
increases in frequency with each Answer: positive half cycle of the
modulating signal.
⩥ The formula to find the modulating index is Answer: deviation
divided by frequency of modulation.
⩥ What is the modulation index of a 5 kilohertz (kHz) modulating signal
that has enough peak voltage to cause a deviation of 15 kHz? Answer:
3.0.
2026 ONE HUNDRED QUESTIONS WITH
CORRECTLY ANALYZED ANSWERS
GRADED A PLUS COMPLETE STUDY GUIDE
⩥ What metric prefix is used to describe the decimal number .001?
Answer: Milli
⩥ An atom becomes an ion by Answer: gaining or losing electrons in it
outer shell.
⩥ Which electrical term is measured in watts (W)? Answer: Power
⩥ With the alternating current (AC) method, voltage forces electrons to
flow Answer: first in one direction, then in the opposite direction,
alternating very quickly.
⩥ In 1819, Hans Christian Oersted discovered the strength of a magnetic
field can be changed by varying what characteristic? Answer: Current
through a conductor.
⩥ If a conductor lies in a magnetic field, and either the field or
conductor moves, a voltage is induced in the conductor. This effect is
called Answer: electromagnetic induction
,⩥ A resistor is used in a circuit to Answer: control current flow.
⩥ A capacitor will oppose a change in Answer: voltage and store energy
in an electrostatic field.
⩥ The two basic purposes of a transistor are either to perform as a
Answer: switch or amplify a circuit.
⩥ In a schematic diagram, how is current flow always portrayed on a
transistor when it is forward biased Answer: Against the arrow.
⩥ A Zener diode is specifically designed to operate in Answer: reverse
bias mode.
⩥ An advantage of integrated circuits (IC) is that they Answer: are more
reliable.
⩥ The number of pulses in the direct current (DC) output of a bridge
rectifier is called the Answer: ripple frequency.
⩥ What power supply circuit senses changes in output voltages and
compensates for the changes, usually within plus or minus (±) 0.1
percent? Answer: Regulator
,⩥ What wave-shaping circuit ties down the upper or lower extremity of
a waveform to a fixed direct current (DC) potential? Answer: Clamping
⩥ What is the binary equivalent of the decimal number 7? Answer: 111
⩥ What is the binary coded decimal (BCD) equivalent of the binary
number 1011? Answer: 0001 0001
⩥ Which is not a conventional problem that microwave tubes overcome
in order to be used in high power, high frequency oscillators and
amplifiers? Answer: Inter-cathode resistance
⩥ What is the wavelength if the frequency is changed from 150
megahertz (MHz) to 250 MHz? Answer: 1.2 meters
⩥ On a transmission line with an open termination, the wave is reflected
back to the source and Answer: there would be significant signal loss
⩥ What data bus was originally developed for military avionics
applications? Answer: Military Standard (MIL-STD)-155
⩥ Energy travels through a waveguide because of Answer: interaction of
magnetic and electric fields.
, ⩥ Three devices used to inject or remove energy from waveguides are
known as Answer: probes, loops, and slots.
⩥ When the modulating signal and carrier signal are combined within a
modulator, the output signal contains the Answer: carrier, upper
sideband, and lower sideband.
⩥ If the modulating audio signal is 10 kilohertz (kHz) wide, what is the
bandwidth (BW) of the transmitted amplitude modulated signal?
Answer: 20 kHz
⩥ Reducing modulation to less than 100 percent results in Answer: no
reduction in carrier power.
⩥ The oscillator output in a frequency modulation (FM) modulator
increases in frequency with each Answer: positive half cycle of the
modulating signal.
⩥ The formula to find the modulating index is Answer: deviation
divided by frequency of modulation.
⩥ What is the modulation index of a 5 kilohertz (kHz) modulating signal
that has enough peak voltage to cause a deviation of 15 kHz? Answer:
3.0.
