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AT&T TKT II
Voltage - ✔ ✔ A capacitor apposes any change in __________
140 micro henries - ✔ ✔ Two inductance coils of 60 and 80 micro henries are connected in series, but without any mutual coupling. The total inductance would be_________
3 ohms - ✔ ✔ Resistors of 10, 15, and 6 ohms are connected in parallel. The total resistance is_________
Lead the current by 90 degrees - ✔ ✔ The AC voltage across a pure inductance is said to_______
Germamium and Silicon - ✔ ✔ The two materials most commonly used in the manufacture of transistors are_______
25 ohms - ✔ ✔ A parallel circuit of 4 branch's has a 100 ohm resistor in each branch. The total resistance would be_________
.000001 h - ✔ ✔ 1 micro Henry is__________
The total opposition to current flow - ✔ ✔ The impedance of an AC circuit is equal to
Alternating Current (AC) - ✔ ✔ A flow of electric charge that regularly reverses its direction.
1450 ohms - ✔ ✔ 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________
length, thickness, and temperature - ✔ ✔ The DC resistance of a conductor is determined by_______
1/2 - ✔ ✔ If the space between the plates capacitor is doubled, the capacity will be________
The voltage is the same for all branches - ✔ ✔ The Parallel circuit.
Residual magnetism - ✔ ✔ The amount of magnetism left in an electromagnet after current been removed
A secondary cell can be charged, A primary cell can not be recharged - ✔ ✔ A primary cell differs for a secondary cell
Amperes - ✔ ✔ The rate of electron flow, the unit for measuring electrical current; the abbreviation is amp.
decreases - ✔ ✔ When the frequency of the applied voltage increases capacitive reactance increases, decreases, or remains the same.
6.5 k - ✔ ✔ Convert 6500 ohms to K ohms
.033 - ✔ ✔ Convert 33 mili amps to amps
True/apparent - ✔ ✔ In an AC current, if the power factor = .5, then the ________ power is 1/2 the __________ power
less than 90 degrees - ✔ ✔ In the RCL circuit, the phase difference between voltage and current is ____________
.14 KV - ✔ ✔ 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________
.025 seconds - ✔ ✔ If a resistor of 5 mega ohms is placed in series with a capacitor of .005 micro farads, the time constant would be__________
maximum - ✔ ✔ A multi-meter should offer maximum or minimum resistance.
Decreases - ✔ ✔ As the resistance of a material increases, its conductance increases or decreases.
Capacitors block DC, Capacitors can store a DC charge, Capacitors pass the effects of AC - ✔ ✔ Except for a brief period immediately after voltage is applied_________
The smallest unit of information that a computer can use, either a 0 or 1 - ✔ ✔ A Bit is ___________
8 bits, The smallest unit of information can store - ✔ ✔ A byte is
4 bits or half a byte - ✔ ✔ A nibble is __________
1024 bits - ✔ ✔ 1 KB based on binary system
Rectifier - ✔ ✔ Converts AC to pulsating DC
5 - ✔ ✔ How many time constants are required to charge a capacitor to 100 percent of the source voltage.
Buffer - ✔ ✔ A device used to compensate for variations in speed between to different devices is a _________
Operates the system and decodes program language - ✔ ✔ ROM (read only memory)
Can be changed by the user or system and is lost when power is removed from the system - ✔ ✔ RAM (random access memory)
Buses - ✔ ✔ To communicate between all its elements, a computer utilizes__________
Programs, routines and symbolic languages - ✔ ✔ Software includes_________
The bits to arrive 1 at time - ✔ ✔ if data is sent in serial form you would expect________
Synchronous - ✔ ✔ High speed data transmition would be done as synchronous or Asynchronous transmition
Both directions simultaneously - ✔ ✔ Full duplex transmission allows data to flow
Pad - ✔ ✔ A device that increases measured loss in a circuit is called a ____________
Repeater - ✔ ✔ A device that provides a gain in a circuit is a
Increase - ✔ ✔ As frequency of signals increase, you would expect measured loss to__________
The greater the measured loss - ✔ ✔ The small the gauge wire used in transmition
A start point - ✔ ✔ A circle in a flow chart indicates
A decision - ✔ ✔ A diamond on a flow chart indicates
A firewall - ✔ ✔ a part of a computer system or network that is designed to block unauthorized access while permitting outward communication.
Digital - ✔ ✔ The term for an electrical signal with only two states
Physical layer - ✔ ✔ The lowest, or first, layer of the OSI model.
A fuse is a safety device - ✔ ✔ Activated when current through it is to high
When it comes to safety around electrical equipment you should, - ✔ ✔ Follow manufacture directions
Closed - ✔ ✔ What kind of circuit has a complete current path?
Capacitance - ✔ ✔
Closed - ✔ ✔ What kind of circuit has a complete current path?
Closed - ✔ ✔
