CETA / AST Practice Questions And Answers Verified
100% Correct
A capacitor (3/8" x 1/8" ceramic or mica) marked 47k is:
A. 47pf +/- 10%
B. 4.7 uf +/- 5%
C. 47 uf +/- 20%
D. 47 mf +/- 10% - ANSWER A. 47pf +/- 10%
A " Digital Storage Oscilloscope":
A. Uses micro processing and memory to allow close analysis of signals
B. Is specially designed for analyzing digital signals
C. Converts analog input signals to a digital display
D. Converts digital input signals to an analog display - ANSWER A. Uses
micro processing and memory to allow close analysis of signals
Carbon microphones are much like variable:
A. Capacitors
B. Resistors
C. Thermistors
D. Inductors - ANSWER B. Resistors
An antenna that is longer than another:
A. Will have a higher resonant frequency
B. Will have a lower resonant frequency
C. Has a higher Q
D. Delivers higher power - ANSWER B. Will have a lower resonant
frequency
An 8-bit binary code allows __________ logical combinations.
A. 16
,B. 64
C. 256
D. 512 - ANSWER C. 256
An inductor in an electronic circuit:
A. Resists AC current flow
B. Appears capacitive to AC current
C. Reduces DC power dissipation
D. Is a near short to AC current - ANSWER A. Resists AC current flow
A printer directly connected to a personal computer would use a
__________ connection.
A. VGA
B. Ethernet 100 Base-T
C. USB or parallel Centronics
D. DB15 - ANSWER C. USB or parallel Centronics
The digital method of representing characters by using combinations of
zeroes and ones is called:
A. Decimal
B. Alpha-beta
C. Duplex
D. Binary - ANSWER D. Binary
FM utilizes __________ where AM utilizes signal level variations.
A. Frequency variations
B. Power variations
C. Sideband modulations
D. Phase modulations - ANSWER A. Frequency variations
What decimal number is represented by the binary number 01101010?
A. 6A
B. 53
, C. 106
D. 152 - ANSWER C. 106
Decimal 50 would appear as __________ in Hex.
A. 32
B. 62
C.
101000
D.
110010 -
ANSWER
A. 32
Of these choices, the display of a DMM would probably be:
A. 32
B. Pointer
C. CRT
D. Floating ball - ANSWER A. 32
A disadvantage of LCD (liquid crystal display) is:
A. High current demands
B. Environmental temperature sensitivity
C. Slow reactance to input
D. Vibration sensitivity limitations - ANSWER B. Environmental
temperature sensitivity
A series DC motor, with no load:
A. Tends to stop or not start
B. May be damaged by excessive speed
C. Reverse direction
D. Becomes an AC generator - ANSWER B. May be damaged by
excessive speed
100% Correct
A capacitor (3/8" x 1/8" ceramic or mica) marked 47k is:
A. 47pf +/- 10%
B. 4.7 uf +/- 5%
C. 47 uf +/- 20%
D. 47 mf +/- 10% - ANSWER A. 47pf +/- 10%
A " Digital Storage Oscilloscope":
A. Uses micro processing and memory to allow close analysis of signals
B. Is specially designed for analyzing digital signals
C. Converts analog input signals to a digital display
D. Converts digital input signals to an analog display - ANSWER A. Uses
micro processing and memory to allow close analysis of signals
Carbon microphones are much like variable:
A. Capacitors
B. Resistors
C. Thermistors
D. Inductors - ANSWER B. Resistors
An antenna that is longer than another:
A. Will have a higher resonant frequency
B. Will have a lower resonant frequency
C. Has a higher Q
D. Delivers higher power - ANSWER B. Will have a lower resonant
frequency
An 8-bit binary code allows __________ logical combinations.
A. 16
,B. 64
C. 256
D. 512 - ANSWER C. 256
An inductor in an electronic circuit:
A. Resists AC current flow
B. Appears capacitive to AC current
C. Reduces DC power dissipation
D. Is a near short to AC current - ANSWER A. Resists AC current flow
A printer directly connected to a personal computer would use a
__________ connection.
A. VGA
B. Ethernet 100 Base-T
C. USB or parallel Centronics
D. DB15 - ANSWER C. USB or parallel Centronics
The digital method of representing characters by using combinations of
zeroes and ones is called:
A. Decimal
B. Alpha-beta
C. Duplex
D. Binary - ANSWER D. Binary
FM utilizes __________ where AM utilizes signal level variations.
A. Frequency variations
B. Power variations
C. Sideband modulations
D. Phase modulations - ANSWER A. Frequency variations
What decimal number is represented by the binary number 01101010?
A. 6A
B. 53
, C. 106
D. 152 - ANSWER C. 106
Decimal 50 would appear as __________ in Hex.
A. 32
B. 62
C.
101000
D.
110010 -
ANSWER
A. 32
Of these choices, the display of a DMM would probably be:
A. 32
B. Pointer
C. CRT
D. Floating ball - ANSWER A. 32
A disadvantage of LCD (liquid crystal display) is:
A. High current demands
B. Environmental temperature sensitivity
C. Slow reactance to input
D. Vibration sensitivity limitations - ANSWER B. Environmental
temperature sensitivity
A series DC motor, with no load:
A. Tends to stop or not start
B. May be damaged by excessive speed
C. Reverse direction
D. Becomes an AC generator - ANSWER B. May be damaged by
excessive speed
