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Discussion
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Electronics
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Standard Logic Devices (SLD)
See What Others Are Saying!
Question
When an IC has two rows of parallel connecting pins, the device is referred to as:
Options
A. a QFP
B. a DIP
C. a phase splitter
D. CMOS
Correct Answer
a DIP
More questions
1. As a generator armature passes the 270 degree point, the induced voltage is:
Options
A. at maximum negative
B. between maximum negative and zero
C. at maximum positive
D. between zero and maximum positive
Show Answer
Scratch Pad
Discuss
Correct Answer: at maximum negative
2. In a B-H curve, magnetizing force is equal to:
Options
A.
B. H = I × N
C. ampere-turns per weber
D. webers per square meter
Show Answer
Scratch Pad
Discuss
Correct Answer:
3. When a transformer secondary lead has been connected to a middle loop that is not an end connector, it is called a:
Options
A. multiple-tapped secondary
B. center-tapped secondary
C. multiple winding secondary
D. single winding secondary
Show Answer
Scratch Pad
Discuss
Correct Answer: center-tapped secondary
4. What is the impedance of a 1 kHz series RL circuit when R and X
L
are both 1000 ohms?
Options
A. 500 ohms
B. 1000 ohms
C. 1414 ohms
D. 2000 ohms
Show Answer
Scratch Pad
Discuss
Correct Answer: 1414 ohms
5. A turns ratio of 5 for a transformer implies:
Options
A. more primary turns than secondary turns
B. more secondary current than primary current
C. larger source impedance than load impedance
D. more secondary turns than primary turns
Show Answer
Scratch Pad
Discuss
Correct Answer: more secondary turns than primary turns
6. What happens when moving expanding lines of force encounter a conductor?
Options
A. Current increases.
B. Voltage is induced.
C. Resistance is reduced.
D. Power is increased.
Show Answer
Scratch Pad
Discuss
Correct Answer: Voltage is induced.
7. Find V
R
and V
L
.
Options
A. V
R
= 41.6 V, V
L
= 78.4 V
B. V
R
= 48 V, V
L
= 110 V
C. V
R
= 56 V, V
L
= 106 V
D. V
R
= 60 V, V
L
= 60 V
Show Answer
Scratch Pad
Discuss
Correct Answer: V
R
= 56 V, V
L
= 106 V
8. Faraday's law states that the:
Options
A. direction of the induced voltage produces an opposition
B. direction of an induced current produces an aiding effect
C. emf depends on the rate of cutting flux
D. emf is related to the direction of the current
Show Answer
Scratch Pad
Discuss
Correct Answer: emf depends on the rate of cutting flux
9. A transformer is used:
Options
A. to couple electric energy from one dc circuit to another
B. to couple electric energy from an ac circuit to a dc circuit
C. to couple electric energy from a dc circuit to an ac circuit
D. to couple electric energy from one ac circuit to another
Show Answer
Scratch Pad
Discuss
Correct Answer: to couple electric energy from one ac circuit to another
10. The time required for one weber of flux to cut a conductor and produce one volt is:
Options
A. one revolution
B. one second
C. one millisecond
D. four revolutions
Show Answer
Scratch Pad
Discuss
Correct Answer: one second
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