WorksheetspasEEklaban ng talino: An Electrical Engineering Local Quiz
Total questions: 45
Worksheet time: 42mins
EASY
A conducting part or a system of conducting parts through which an electric current flow or is intended to flow.
Ammeter
Current
Circuit
Components
Who discovered neutrons in 1932?
James Chadwick
Charles-Augustin de Coulomb
Ernest Rutherford
Joseph John Thomson
Who discovered electrons in 1897?
James Chadwick
Charles-Augustin de Coulomb
Ernest Rutherford
Joseph John Thomson
The part of an atom that gives an element its identity is called ________.
Proton
Neutron
Electron
Nucleus
What is the multiplier of the prefix µ?
x 10-6
x 10-3
x 103
x 106
1 Coulomb is equal to approximately ______ charges.
6.24 x 1019
6.24 x 1018
6.24 x 10-18
6.24 x 10-19
It is the electrical pressure that pushes electrons.
Voltage
Resistance
Current
Electric Charge
It is a measurement of joule of energy per coulomb of charge.
Voltage
Resistance
Current
Electric Charge
It is a property of a material that opposes the flow of charges through it.
Voltage
Resistance
Current
Power
Ohm’s Law states that …
The current is directly proportional to voltage and resistance.
The current is inversely proportional to voltage and resistance.
The current is directly proportional to voltage and inversely proportional to its resistance.
The current is directly proportional to resistance and inversely proportional to its voltage.
Who invented the first battery?
Thomas Edison
Alessandro Volta
Benjamin Franklin
Michael Faraday
Who invented the modern lightbulb?
Thomas Edison
Alessandro Volta
Benjamin Franklin
Michael Faraday
It is a characteristic of a unit matter that expresses the extent to which it has more of fewer electrons than protons.
Voltage
Resistance
Current
Electric Charge
The following are the factors that affecting the resistance except
Pressure
Length of Conductor
Temperature
Cross Sectional Area
Resistance is inversely proportional to the length of a conductor.
TRUE
FALSE
The bigger the cross-sectional area, the less resistance.
TRUE
FALSE
The resistance increases with increasing temperature.
TRUE
FALSE
It is an electrical circuit in which all the components are lined up in a single path.
Series Circuit
Parallel Circuit
Open Circuit
Short Circuit
What is constant in a series circuit?
Voltage
Resistance
Current
Electrical Charge
It is an electrical circuit in which the components are connected between two points, with one of the two ends of each component connected to each point.
Series Circuit
Parallel Circuit
Open Circuit
Short Circuit
AVERAGE
It is a measure of how much work can be performed in a given amount of time.
Voltage
Resistance
Energy
Power
It is the capacity to do work.
Voltage
Resistance
Energy
Power
A short circuit is a circuit element with resistance approaching ______.
Zero
Infinity
k Ω
M Ω
An open circuit is a circuit element with resistance approaching ______.
Zero
Infinity
k Ω
M Ω
Determine the bus bar made of copper if the length is 10 meters long and the cross-section is a 4 x 4 cm2. Use 1.7241 microohm-cm as the resistivity.
212.1x10-4 Ω
431.2x10-4 Ω
343.1x10-6 Ω
107.8x10-6 Ω
If a capacitor is rated for 200V dc, what is its effective ac working voltage?
50 V
100 V
200 V
400 V
Which one of the following elements serves as a protection against overload?
Fuse
Switch
Resistor
Relay
A point at which two or more elements have a common connection.
Contact Point
Node
Loop
Branch
A single path containing one element which connects one node to any other node.
Branch
Node
Contact Point
Loop
A group of the cells that generate electric energy from their internal chemical reaction.
Electrolytic Cells
Electric Cell
Fuel Cell
Battery
If a current of 30 µA flows through a 5.4 MΩ resistor, what is the voltage?
162 V
162 kV
162 mV
162 MV
A 12 V battery is connected in a circuit having three series-connected resistors having resistances of 4Ω, 9Ω and 11Ω. Determine the current flowing through.
2.88 A
0.5 A
2 A
1 A
A 12 V battery is connected in a circuit having three series-connected resistors having resistances of 4Ω, 9Ω and 11Ω. Determine the voltage across the 9 Ω resistor.
25.92V
4.5V
18V
9V
Three resistors, 10 Ω, 20 Ω, 30 Ω, are connected in parallel with 24V battery source. What is the total current?
4.4 A
0.4 A
130.8 A
1440 A
Three resistors of 10, 15 and 20Ω each are connected in parallel. What will be the total resistance?
45 Ω
17.2 Ω
0.22 Ω
4.62 Ω
HARD
An 8-ohm resistor is in series with a lamp. The circuit current is 1A. With 20V applied, what voltage is being allowed for the lamp.
4V
8V
12V
20V
What are the individual values of two parallel resistors whose RT is 8 ohms, when one has double the resistance of the other?
2.7 ohms and 5.3 ohms
8 ohms and 16 ohms
10 ohms and 20 ohms
12 ohms and 24 ohms
The substation bus bar is made up of 2-inches round copper bars 20 ft. long. What is the resistance of each bar if the resistivity is 1.724 x10-6 ohm-cm?
1 inch = 2.54cm. 1ft = 12inch.
7.21x10-5 Ω
13.8x10-6 Ω
5.185x10-5 Ω
2.96x10-5 Ω
What extends the range of a dc ammeter?
Inductance
Capacitor
Current transformer
Shunt resistance
A 120 V DC motor draws current of 100 A and is located 1000ft from the supply source. If the diameter of the copper transmission line is 0.45 inch, what must be the voltage supply?
125.32 V
130.24 V
129. 32V
127.05 V
If two parallel-connected resistors dissipate 6 watts and 10 watts of power, then what is the total power loss?
3.75 W
4 W
16 W
60 W
When a parallel 5 kΩ and a 25 kΩ resistor have a 10V supply what is the total power loss?
2.4 mW
24 mW
33 mW
3.3 mW
An arc lamp takes 10 A at 50 V. a resistance R is to be placed in series so that the lamp may burn correctly from a 110 V supply. Find the power wasted in this resistor.
800 W
600 W
700 W
900 W
The power drawn by a resistive coil made of copper wire is 220 W at 100 V and 20 °C. Calculate the power consume by the coil at 115 V and 100 °C. The temperature coefficient of resistance at 20 °C is 0.00393.
175 W
211 W
183 W
225 W
An 8-ohm resistor is connected in series with a parallel combination of two resistors, R and 24 ohms. Determine R if the power consumed by the parallel connected resistors is equal to the power consumed by the 8-ohm resistor.
10 Ω
16 Ω
20 Ω
12 Ω
