AT&T TKT II Complete Exam Study
Guide (Questions and Answers)
Already Graded A+
1. The rate of electron flow, the unit for measuring electrical current; the
abbreviation is amp. - ANSWER Amperes
2. When the frequency of the applied voltage increases capacitive reactance
increases, decreases, or remains the same. - ANSWER decreases
3. Convert 6500 ohms to K ohms - ANSWER 6.5 k
4. Convert 33 mill amps to amps - ANSWER .033
5. 1 micro Henry is__________ - ANSWER .000001 h
6. The impedance of an AC circuit is equal to - ANSWER The total opposition
to current flow
7. A flow of electric charge that regularly reverses its direction. - ANSWER
Alternating Current (AC)
8. A series circuit contains a pure inductance with a reactance of 200 ohms, a
resister of 1 k ohm, and a capacitor with a reactance of 250 ohms. The total
impedance will be________ - ANSWER 1450 ohms
,9. The DC resistance of a conductor is determined by_______ - ANSWER
length, thickness, and temperature
10.If the space between the plates capacitor is doubled, the capacity will
be________ - ANSWER 1/2
11.The Parallel circuit. - ANSWER The voltage is the same for all branches
12.The amount of magnetism left in an electromagnet after current been
removed - ANSWER Residual magnetism
13.A primary cell differs for a secondary cell - ANSWER A secondary cell can
be charged, A primary cell can not be recharged
14.Has the current passing through a conductor increases, the magnetic flux
surrounding the wire will _________ - ANSWER Increase
15.If 3 unequal resistors are connected in parallel across a 120 volt line -
ANSWER 120 volt exits on across all resistors
16.Mutual inductance in a coil is caused by - ANSWER A variable flux in 1
coil cutting across anther coil
17.IF a coil across a 500 cycle generator has the inductive reactance of 30
ohms, increasing the frequency to 1000 cycles will ___________ -
ANSWER Double the inductive reactance
, 18.If the AC voltage reaches its positive maximum at the same time as current
reaches 0, voltage and current are said to be__________ - ANSWER 45
degrees out of phase
19.If a resistor of 5 mega ohms is placed in series with a capacitor of .005 micro
farads, the time constant would be__________ - ANSWER .025 seconds
20.A multi-meter should offer maximum or minimum resistance. - ANSWER
maximum
21.In an AC current, if the power factor = .5, then the ________ power is 1/2
the __________ power - ANSWER True/apparent
22.In the RCL circuit, the phase difference between voltage and current is
____________ - ANSWER less than 90 degrees
23.If an electrical door bell has a resistance of 70 ohms and requires a current of
2 amps, the voltage necessary to operate the bell is________ - ANSWER
.14 KV
24.A volt is a measure of this - ANSWER electromotive force (emf)
25.When the applied frequency is increased in a circuit containing an inductor
and a capacitor - ANSWER Inductive reactance increases
26.200 micro farads is the same as - ANSWER 2 x 10-4 Farads
27.Base unit of charge - ANSWER Coulomb
Guide (Questions and Answers)
Already Graded A+
1. The rate of electron flow, the unit for measuring electrical current; the
abbreviation is amp. - ANSWER Amperes
2. When the frequency of the applied voltage increases capacitive reactance
increases, decreases, or remains the same. - ANSWER decreases
3. Convert 6500 ohms to K ohms - ANSWER 6.5 k
4. Convert 33 mill amps to amps - ANSWER .033
5. 1 micro Henry is__________ - ANSWER .000001 h
6. The impedance of an AC circuit is equal to - ANSWER The total opposition
to current flow
7. A flow of electric charge that regularly reverses its direction. - ANSWER
Alternating Current (AC)
8. A series circuit contains a pure inductance with a reactance of 200 ohms, a
resister of 1 k ohm, and a capacitor with a reactance of 250 ohms. The total
impedance will be________ - ANSWER 1450 ohms
,9. The DC resistance of a conductor is determined by_______ - ANSWER
length, thickness, and temperature
10.If the space between the plates capacitor is doubled, the capacity will
be________ - ANSWER 1/2
11.The Parallel circuit. - ANSWER The voltage is the same for all branches
12.The amount of magnetism left in an electromagnet after current been
removed - ANSWER Residual magnetism
13.A primary cell differs for a secondary cell - ANSWER A secondary cell can
be charged, A primary cell can not be recharged
14.Has the current passing through a conductor increases, the magnetic flux
surrounding the wire will _________ - ANSWER Increase
15.If 3 unequal resistors are connected in parallel across a 120 volt line -
ANSWER 120 volt exits on across all resistors
16.Mutual inductance in a coil is caused by - ANSWER A variable flux in 1
coil cutting across anther coil
17.IF a coil across a 500 cycle generator has the inductive reactance of 30
ohms, increasing the frequency to 1000 cycles will ___________ -
ANSWER Double the inductive reactance
, 18.If the AC voltage reaches its positive maximum at the same time as current
reaches 0, voltage and current are said to be__________ - ANSWER 45
degrees out of phase
19.If a resistor of 5 mega ohms is placed in series with a capacitor of .005 micro
farads, the time constant would be__________ - ANSWER .025 seconds
20.A multi-meter should offer maximum or minimum resistance. - ANSWER
maximum
21.In an AC current, if the power factor = .5, then the ________ power is 1/2
the __________ power - ANSWER True/apparent
22.In the RCL circuit, the phase difference between voltage and current is
____________ - ANSWER less than 90 degrees
23.If an electrical door bell has a resistance of 70 ohms and requires a current of
2 amps, the voltage necessary to operate the bell is________ - ANSWER
.14 KV
24.A volt is a measure of this - ANSWER electromotive force (emf)
25.When the applied frequency is increased in a circuit containing an inductor
and a capacitor - ANSWER Inductive reactance increases
26.200 micro farads is the same as - ANSWER 2 x 10-4 Farads
27.Base unit of charge - ANSWER Coulomb
