850971
Beschreibung
Quiz von Vito Martino, aktualisiert more than 1 year ago
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Erstellt von Vito Martino
vor mehr als 10 Jahre
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Frage 1
Antworten
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0.356 Ω
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0.536 Ω
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0.178 Ω
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0.235 Ω
Frage 2
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50 m
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25 m
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30 m
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40 m
Frage 3
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0.065 Ω
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0.552 Ω
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0.045 Ω
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0.055 Ω
Frage 4
Frage
Which of the following formulas can calculate power in a resistive circuit
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Image:Slide1.JPG (image/JPG)
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Image:Slide2.JPG (image/JPG)
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Image:Slide3.JPG (image/JPG)
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Image:Slide4.JPG (image/JPG)
Frage 5
Frage
3 x 12Ω resistors are connected in parallel to a 200V supply, calculate the total power of the circuit.
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10,000W
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400W
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1,000W
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1,111W
Frage 6
Frage
Two resistors of 20 ohms and 40 ohms are connected in series across a 120v d.c. supply, the current flowing in the circuit will be:
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20 A
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2 A
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5 A
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0.5 A
Frage 7
Frage
If three resistors are connected in series and have resistances of 20 Ω, 30 Ω, and 40 Ω then the total resistance would be
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100 Ω
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90 Ω
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70 Ω
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80 Ω
Frage 8
Frage
3 x 20Ω resistors are connected in series to a 200V supply, calculate the total power of the circuit.
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10 KW
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0.666 KW
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0.333 KW
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12 KW
Frage 9
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10 Ω
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15 Ω
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100 Ω
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90 Ω
Frage 10
Frage
To measure the current through a load the meter must be connected
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across the load
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in parallel with the supply
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in parallel with the load
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In series with the load
Frage 11
Frage
To measure the voltage across a load the meter must be connected
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before the load
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in parallel with the supply
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in parallel with the load
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In series with the load
Frage 12
Frage
In the diagram below if I1 and I2 are ammeter readings then
Image:
Series_circuit_2 (image/jpg)
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I2 will be greater than I1
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I1 will be greater than I2
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I1 will be equal to I2
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I1 will be half I2
Frage 13
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the current through R3
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the current through R1 and R2
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the volt drop across R1 and R2
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the volt drop across R1 and R3
Frage 14
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the current through R3
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the current through R1
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the volt drop across R1 and R2
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the volt drop across R1
Frage 15
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current through a resistor
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supply current
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Voltage across a resistor
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supply voltage
Frage 16
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current through a resistor
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supply current
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Voltage across a resistor
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supply voltage
Frage 17
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0.1A
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10A
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20A
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1.1A
Frage 18
Frage
If four resistors each of 50 Ω are connected in parallel the overall resistance is
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25 Ω
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100 Ω
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12.5 Ω
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200 Ω
Frage 19
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none of them
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1 and 3
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2 and 3
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1
Frage 20
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none of them
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3
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2
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1
Frage 21
Frage
When current flows in a conductor, a magnetic field is created around the conductor
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when the voltage is high enough
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only if it is a coil
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as long as the current flows
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only when d.c is applied
Frage 22
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the supply current
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the current through R1
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the volt drop across R1 and R2
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the volt drop across R1
Frage 23
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the supply current
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the current through R1
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the volt drop across R2 and R3
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the supply voltage
Frage 24
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the supply current
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the current through the resistor
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the supply voltage
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the voltage across the resistor
Frage 25
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the supply current
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the current through the resistor
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the supply voltage
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the voltage across the resistor
Frage 26
Frage
Of the following materials which would be the BEST conductor of electricity?
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Nichrome
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Steel
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Aluminium
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Copper
Frage 27
Frage
A poor conductor of electricity is:
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Glass
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Copper
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Aluminium
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Silver
Frage 28
Frage
The resistance of an electrical conductor is:
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Affected by the weather
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Determined by the formula I = P x V
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Inversely proportional to length and proportional to c.s.a
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Proportional to the length and inversely proportional to the c.s.a
Frage 29
Frage
What is the formula for two resistors in parallel?
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R1 + R2/R1 - R2
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R1 - R2/R1 x R2
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R1 + R2/R1 x R2
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R1 x R2/R1 + R2
Frage 30
Frage
When the current through a conductor increases
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the voltage decreases
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the temperature decreases
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the temperature increases
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the resistance decreases
Frage 31
Frage
The current in a circuit is 100A and the resistance is 0.1 Ohm. The supply voltage is
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14V
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20V
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12V
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10V
Frage 32
Frage
The equation for current flowing in a resistive circuit is
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I = R/P
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I = R/V
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I = P/R
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I = V/R
Frage 33
Frage
The total resistance of two resistors of 20 Ohms and 35 Ohms connected in series is
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50 Ohms
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45 Ohms
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15 Ohms
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55 Ohms
Frage 34
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When an electric current flows through a conductor it
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Cools down and expands
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Cools down and contracts
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Heats up and contracts
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Heats up and expands
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