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ELECTRICAL AND INSTRUMENTATION QUESTIONS AND VERIFIED ANSWERS|100% CORRECT|GRADE A+
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ELECTRICAL AND INSTRUMENTATION QUESTIONS AND VERIFIED ANSWERS|100% CORRECT|GRADE A+
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ELECTRICAL AND INSTRUMENTATIONQUESTIONS AND VERIFIED
ANSWERS|100% CORRECT|GRADE A+
a - ANSWER The total equivalent resistance of three resistances in a series circuit can be given as:
Choose one answer.
a. R1 + R2 + R3
b. (1/R1) + (1/R2) + (1/R3 )
c. (R1/1) + (R2/2) + (R3/3)
d. R1 x R2 x R3
e. (R1 + R2 + R3) / 3
e - ANSWER The voltage required to force a current of 15 A through a resistance of 5 Ω will be _____ V.
Choose one answer.
a. 0.33
b. 3
c. 7.5
d. 33
e. 75
e - ANSWER When 1 ampere of current flows through a resistance by the application of 1 volt the
resistance will be 1:
Choose one answer.
a. Watt
b. Joule
c. Kilowatt
d. Ampere
e. Ohm
,e - ANSWER The voltage required to be supplied to a 12 kW motor drawing 24 A is:
Choose one answer.
a. 5 kV
b. 50 kV
c. 288 v
d. 2 kV
e. 500 V
d - ANSWER _____ current flow is from positive to negative.
Choose one answer.
a. Alternating
b. Direct
c. Static
d. Conventional
e. Electron
e - ANSWER The purpose of having an upward movement of a switch handle to close the switch is:
Choose one answer.
a. To have the handle out of the way
b. To meet the requirements of the electrical codes
c. Because it is easier to operate when opening the switch
d. It indicates the condition of the circuit
e. To prevent the switch from closing due to gravity
e - ANSWER Atoms that have greater numbers of electrons in the outer shell are:
Choose one answer.
a. Positively charged
b. Good conductors
c. Poorinsulators
,d. Neutrally charged
e. Poor conductors
c - ANSWER The EMF of an electrical circuit may be provided by:
Choose one answer.
a. The load
b. The circuit resistance
c. A battery
d. The current
e. The conductors
a - ANSWER The opposition, a device or material offers to the flow of electric current, is known as:
Choose one answer.
a. resistance
b. conductance
c. voltage drop
d. insulation
e. counter EMF
a - ANSWER Electrical power can be determined by the formula:
Choose one answer.
a. P = E x I
b. I = E x R
c. E = I x R
d. R = E x I
e. P = I x R
c - ANSWER The voltage drop across a 20 Ω resistor with 10 A flowing would be _____ V.
Choose one answer.
, a. 2
b. 0.5
c. 200
d. 20
e. 150
b - ANSWER The equivalent resistance of three resistances of 10, 25 and 50 Ω connected in parallel is
_____ Ω.
Choose one answer.
a. 0.16
b. 6.25
c. 85
d. 18.75
e. 8.5
c - ANSWER The unit for opposition to current flow is the:
Choose one answer.
a. Volt
b. Ampere
c. Ohm
d. Watt
e. Newton
b - ANSWER A material that conducts electrical current is called:
Choose one answer.
a. An insulator
b. A conductor
c. A circuit
d. Wire
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