AC Voltage Question Preview (ID: 51771)
Ac Voltage Is The Main Source Of Electricity Uses In Our Homes Instlations.
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The wave form of DC voltage on oscilloscope is
a) Sinusoidal wave
b) Triangular wave
c) Rectangular wave
d) straight line
The voltmeter measures :
a) Maximum voltage
b) Effective voltage
c) Effective current
d) Maximum current
The voltage supplied by the mains of EDL characterized by :
a) Alternating sinusoidal
b) Frequency %0 Hz
c) Effective voltage 220 Volt
d) All the above choices
The unit of current in SI unit is :
a) Volt
b) Ampere
c) Watt
d) Joule
Period ( T ) can be determined by Law T = Vb x where x is
a) The number of units in the amplitude ( y – units )
b) The number of units in one crest
c) The number of units between two crests
d) All the above choices
Effective voltage is determined by the following law :
a) Ueff = I/T
b) U eff = Sv x Y
c) U eff = Umax/√2
d) None of the choices
The horizontal sensitivity ( Time base ) is used to determine
a) Frequency
b) Effective voltae
c) Maximum voltage
d) All the above choices
The voltage that cause electrocution leading to death is :
a) 25 V in dry places
b) Current less than 100 mA
c) 25 V in wet places and 50 V in dry places
d) All the above choices
The screw driver glows when tests :
a) Neutral line
b) Live line
c) Ground line
d) All the above choices
The Oscilliscope uses to find the :
a) Maximum voltage
b) Period
c) Type of voltage
d) All the above choices
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