ITI ICTSM Trade 50 MCQs Practice Questions

ITI ICTSM (Information Communication Technology System Maintenance) Trade 50 MCQs Practice Questions Part 8 | Information Communication Technology System Maintenance Multiple Choice Question Set Part 8 | Practice question for ITI students trade ICTSM | ICTSM trade MCQ for ITI trainees.

(1.) What is the composition of steel and silicon steel in transformer core?
(a.) Steel 97% and Silicon 3%
(b.) Steel 95% and Silicon 5%
(c.) Steel 93% and Silicon 7%
(d.) Steel 90% and Silicon 10%
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(2.) What is the purpose of using laminated core in transformer?
(a.) Reduce copper loss
(b.) Reduce hysteresis loss
(c.) Reduce mechanical loss
(d.) Reduce eddy current loss
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(3.) How power rating is specified for transformers?
(a.) Watts (W)
(b.) Voltage (V)
(c.) Volt ampere (VA)
(d.) Horse power (HP)
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(4.) What is the effect on the transformer operated below the rated voltage?
(a.) Burn out windings
(b.) Leads to interwinding leakage
(c.) Transformer heated up excessively
(d.) Delivers reduced secondary voltage
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(5.) Which type of transformer induced secondary voltage is lower than primary voltage?
(a.) Step up transformer
(b.) Step down transformer
(c.) Core type transformer
(d.) Shell type transformer
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(6.) Why the transformer core is made as thin laminations?
(a.) To minimize eddy current losses
(b.) To increase the hysterisis losses
(c.) To maximize eddy current losses
(d.) To increase core saturation losses
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(7.) Which type of transformer is used for high frequency application?
(a.) Ring core transformer
(b.) Ferrite core transformer
(c.) Silicon steel core transformer
(d.) Grain oriented core transformer
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(8.) What is the result of hysteresis loss in magnetic material?
(a.) Back emf increases
(b.) Eddy current decreases
(c.) Magnetic flux increases
(d.) Energy loss takes place
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(9.) Why the core of current transformer is having low reactance and low core losses?
(a.) To minimize the burden
(b.) To maintain constant output
(c.) To prevent high static shield
(d.) To minimize the error in reading
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(10.) Which power loss is assessed by open circuit test on transformer?
(a.) Hysteresis loss only
(b.) Eddy current loss only
(c.) Copper loss
(d.) Core loss
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(11.) Which material is used to make core of power transformer?
(a.) Soft iron
(b.) Rolled steel
(c.) Copper alloy
(d.) Cold rolled grain oriented
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(12.) How to determine copper loss in a transformer?
(a.) Ratio test
(b.) Impulse test
(c.) Short circuit test
(d.) Open circuit test
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(13.) Why ferrite core is used in radio receivers?
(a.) To reduce the constant losses
(b.) To reduce electric interference
(c.) To increase the quality of sound
(d.) To increase the efficiency of receivers
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(14.) Which value is equal to one picofarad?
(a.) 10Âº Farad
(b.) 10Â¹2 Farad
(c.) 10- Farad
(d.) 10-Â¹Â² Farad
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(15.) Which property of the capacitor stores electrical energy in electrostatic field?
(a.) Dielectric
(b.) Capacitance
(c.) Stray capacitance
(d.) Capacitive reactance
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(16.) Which unit is used to measure capacitance value
(a.) Mho
(b.) Ohm
(c.) Farad
(d.) Henry
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(17.) What is the purpose of trimmer capacitor?
(a.) Coupling
(b.) Filtering
(c.) Decoupling
(d.) Fine tuning
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(18.) Which type of capacitor is used for space electronics?
(a.) Plastic film type
(b.) Ceramic disc type
(c.) Electrolytic-Aluminum type
(d.) Electrolytic-Tantalum type
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(19.) What is the effect of the electrolytic capacitor, if open circuit fault occurs?
(a.) It will not function
(b.) It will burst at once
(c.) It will become leaky
(d.) It will function normally
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(20.) What is the capacitance value of a capacitor that requires 0.5 coulomb to charge to 35 volt?
(a.) 0.014 F
(b.) 0.025 F
(c.) 0.14 F
(d.) 0.25 F
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(21.) What is the effect of inductance if the distance between the turns increases?
(a.) Increases
(b.) Decreases
(c.) Becomes zero
(d.) Remains same
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(22.) What is the function of dielectric insulator in capacitor?
(a.) Increases the strength of capacitance
(b.) Prevents any current flow between plates
(c.) Protects from short circuit between the plates
(d.) Helps to hold the charge in capacitor for long period
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(23.) Which factor is determining the value of capacitance in capacitor?
(a.) Area of the plates
(b.) Shape of the plates
(c.) of the plates
(d.) Thickness of the plates
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(24.) How the value of capacitance can be decreased?
(a.) Increasing the plate area
(b.) Increasing the resistance of the plates
(c.) Increasing the distance between the plates
(d.) Using high dielectric constant material
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(25.) What is the effective capacitance for three capacitors connected in parallel?
(a.) Câ‚ + Câ‚‚ + Câ‚‚
(b.) Câ‚ + Câ‚‚
(c.) 1/C, +1/Câ‚‚+ 1/Câ‚‚
(d.) 1/C, +1/Câ‚‚
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(26.) What is the similar term in magnetic circuit for “conductance” in electrical circuit?
(a.) Reluctivity
(b.) Permeance
(c.) Reluctance
(d.) Permeability
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(27.) Which is the cause for changing the permeability?
(a.) Length
(b.) Flux density
(c.) Field intensity
(d.) Magneto motive force
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(28.) Which condition is called as resonance RLC circuit?
(a.) XL > XC
(b.) XC > XL
(c.) XL = Xc
(d.) R<XL
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(29.) How the resonance frequency (fr) can be increased in AC series circuit?
(a.) Reducing the inductance value
(b.) Reducing the capacitance value
(c.) Increasing the capacitance value
(d.) Increasing the value of resistance
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(30.) What is the unit of resonance frequency?
(a.) Ohm
(b.) Hertz
(c.) Volt
(d.) Amphere
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(31.) What is the meaning of maximum safe reverse voltage across a diode?
(a.) PIV voitage
(b.) Knee voltage
(c.) Break down voltage
(d.) Reverse break down voltage
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(32.) What is the peak inverse voltage of germanium diode?
(a.) 0.3 V
(b.) 0.7 V
(c.) 0.8 V
(d.) 1V
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(33.) Which is the first step followed in troubleshooting of electronic circuit?
(a.) Thermal test
(b.) Chemical test
(c.) Mechanical test
(d.) Physical and Sensory test
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(34.) Which diode is used in low power communication circuits?
(a.) Signal diodes
(b.) Rectifier diodes
(c.) Switching diodes
(d.) High power diodes
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(35.) What is the process of adding impurities to a pure semiconductor material?
(a.) Doping
(b.) Etching
(c.) Forming
(d.) Diffusion
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(36.) Which impurity is added to form P-type semiconductor material?
(a.) Arsenic
(b.) Gallium
(c.) Antimony
(d.) Phosphorus
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(37.) Which type of network support by category 5 cable ?
(a.) 100 BASE-TX
(b.) 80 BASE-TX
(c.) 90 BASE-TX
(d.) 70 BASE-TX
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(38.) Usually CAT 5 cable has hou many pair ?
(a.) 3 pair
(b.) 2 pair
(c.) 8 pair
(d.) 4 pair
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(39.) What is the color code of first pin in T-568B standard ?
(a.) White
(b.) Green
(c.) White/orange
(d.) White/green
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(40.) What is the color code of first pin in T-568A standard ?
(a.) White
(b.) Green
(c.) White/orange
(d.) White/green
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(41.) Which one is the type of cat 5 cable ?
(a.) Straight through cable
(b.) Thinnet cable
(c.) Thicknet cable
(d.) None of these
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(42.) Which cable is used for connecting hub to hub ?
(a.) Cross over cable
(b.) Roll over cable
(c.) Co axial cable
(d.) None of these
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(43.) Which of the following represented the fasted data transmission speed ?
(a.) Mbps
(b.) Gbps
(c.) Kbps
(d.) Bps
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(44.) How computer process data into information by working exclusively with ?
(a.) Word
(b.) Numbers
(c.) Character
(d.) None of these
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(45.) What is the name of device which receive information in computer network ?
(a.) Receiver
(b.) Sender
(c.) Input
(d.) None of these
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(46.) What is the name of the device which sends information on computer network ?
(a.) Receiver
(b.) Sender
(c.) Transmission
(d.) None of these
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(47.) What is the another name of set of rules ?
(a.) Protocol
(b.) Input data
(c.) Output data
(d.) None of these
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(48.) Which information is communicated in data communication ?
(a.) Sender
(b.) Message
(c.) Receiver
(d.) None of these
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(49.) Which is the following is not a type of transmission mode ?
(a.) Simplex
(b.) Speed
(c.) Full-duplex
(d.) Half-duplex
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(50.) In which transmission mode data is transmitted only in one direction ?
(a.) Simplex mode
(b.) Speed
(c.) Full duplex
(d.) Hadd duplex
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ITI ICTSM Trade 50 MCQs Practice Questions – Part 8

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