ITI Electronic Mechanic 1st Semester Exam Papers : The course of ITI Electronic Mechanic is of 2 years and where there is semester system, its complete study is done in 4 semesters or we can say that it is divided in 4 semesters, so below you are given the question paper of its 1st semester which has been asked earlier in its exam, so solve it carefully and many more question papers related to this trade are given on our website, by solving which you can prepare yourself.
ITI Electronic Mechanic 1st Semester Exam Papers
1. Which one of the following is a secondary type battery?
•Nickel-Cadmium
•Zinc-Carbon
•Lithium-Manganese
•Mercuric Oxide
Answer. Nickel-Cadmium
2. The minimum coil current required to maintain an energized relay continuously is known as?
•Operate current
•Hold current
•Release current
•Contact current
Answer. Hold current
3. The value of the unit of ‘1 microfarad’ capacitor in farad is equal to?
•103 farad
•10-6 farad
•10-9 farad
•10-12 farad
Answer. 10-6 farad
4. In a transformer, the primary and secondary voltages are 110V and 11 kV respectively. If the number of turns on the primary side is 10, then what will be the number of turns on the secondary side?
•1200
•1000
•800
•10
Answer. 1000
5. What is capacitive reactance measured in?
•In ohm
•In volt
•In ampere
•In farad
Answer. In ohm
6. Which cable is used in computer networking where electromagnetic interference is present?
•UTP
•STP
•Flat ribbon cable
•Optical fiber cable
Answer. STP
7. Which of the following is a self magnetic material?
•Carbon steel
•Cobalt steel
•Iron-silicon mixture
•Iron-aluminium-nickel
Answer. iron-silicon mixture
8. The value of capacitive reactance offered by a capacitor in an AC circuit is……..capacity and frequency?
• What is equal
• Less than
• What is proportional
• What is inversely proportional
Answer. Proportional to the opposite
9. ……..contains buttons which are used for functions like print, auto sum, spelling and grammar etc.-
•Title bar
•Menu bar
•Formatting tool bar
•Standard tool bar
Answer. Standard tool bar
10. The unit of measurement of mutual inductance of a coil is?
•Hertz
•Coulomb
•Henry
•Ohm
Answer. Henry
11. A vertical deflection of 3.4 divisions and a volt/div setting of 20 V are displayed on a CRO panel . The value of this voltage is?
•6 volts
• 23.4 volts
•54 volts
•68 volts
Answer. 68 volts
12. Three resistors each of value “R” ohms are connected in series and this combination is then connected to a battery of voltage ‘V’. The voltage across each resistor will be?
•V volt
•3V volt
•V/3 volt
•2/3V volt
Answer. V/3 volt
13. Purpose of capacitor used at input side of 3 terminal regulator IC
•Ripple needs to be filtered out
•Ripple rejection ratio needs to be improved
•Oscillations need to be stopped
•DC current needs to be stopped
Answer. Oscillations need to be stopped
14. A stigmatism control on the CRO panel is used to control……?
•Focus
•Brightness
•Beam position
•Trace rotation
Answer. Focus
15. In star connection of 3 phase AC supply, the line voltage is equal to?
•Phase voltage
•√3 x phase voltage
•√2 x phase voltage
•3 x phase voltage
Answer. √3 x phase voltage
16. Modem means?
•Mobile Demonstration
•Modulator Demerit
•Monitoring Demarcation
•Modulator Demodulator
Answer. Modulator Demodulator
17. The frequency of AC mains supply in India is?
•100 Hz
•60 Hz
•50 Hz
•30 Hz
Answer. 50 Hz
18. The cross sectional area of SWG 11 wire is approximately ………… that of SWG 14?
•Double
•Equal
•Triple
•Half
Answer. Double
19. The core material used in AC mains transformer is?
•Silicon steel core
•Ferrite core
•Powered iron core
•Cobalt steel core
Answer. Silicon steel core
20. A screwdriver used to tighten or loosen a very hard screw is called?
•Instrument to Screw Driver
•Straight Screw Driver
•Tapered Wings Screw Driver
•Impact Screw Driver
Answer. Impact Screw Driver
21. FTP means?
•File Temporary Port
•File Transfer Port
•File Transfer Protocol
•Folder Transfer Protocol
Answer. File Transfer Protocol
22. Identical batteries are connected in parallel to obtain …….. voltage and …….. AH rating.
•Higher, higher
•Lower, higher
•Equal, higher
•Higher, equal
Answer. Equal, higher
23. In a dual 3 pin IC regulator power supply, a diode is connected across each output to protect the IC from damage due to……. problem?
•Common load
•Overload
•Ripple
•Short circuit
Answer. Common load
24. The algebraic sum of the voltages around a closed path of a circuit is……..
•3
•2
•1 –
•Zero
Answer. Zero
25. For a 12 volt battery a constant voltage type car battery should have its output voltage between ………..?
•15 volts and 16 volts
•14 volts and 15 volts
•13 volts and 14 volts
•12 volts and 13 volts
Answer. 14 volts and 15 volts
26. ………. contains buttons which are often used for functions like changing font colour, bold, centre, italic etc., spelling and grammar etc. –
•Title bar
•Menu bar
•Formatting tool bar
•Standard tool bar
Answer. Formatting tool bar
27. Networks require a central point of connection between media classes, these central points are called……
•NIC card
•Repeater
•Multiplexer
•Hub
Answer. Hub
28. The unit of storage capacity in computer memory is……
•Cubic meter
•Byte
•Hertz
•Joules
Answer. Byte
29. An analog DPDT switch should have minimum……?
•7 pin
•6 pin
•5 pin
•4 pin
Answer. 6 pin
30. Which of the following is a fixed voltage negative type regulator?
•LM 117
•LM 320-5
•LM 340-5
•LM 317
Answer. LM 320-5
31. A transformer with a turn ratio of 1:1 is known as?
•Step-up transformer
•Step-down transformer
•Isolation transformer
•Current transformer
Answer. Isolation transformer
32. The power rating of a resistor is given by-
•I2 x R
•V2 x I
•V2 x R
•R2 x I
Answer. I2 x R
33. Purpose of a current limiting circuit in a regulated power supply
•Limiting load current to a safe limit in case of accidental shorts
•Limiting maximum load current
•Protecting series pass transistors and rectifying diodes
•All of the above
Answer. All of the above
34. A normal voltmeter usually indicates?
•Average value
•Peak value
•Peak to peak value
•RMS value
Answer. RMS value
35. Which of the following is a variable output voltage-multiple pin regulator IC
•LM317
•LM338
•UA723
•LM350
Answer. UA723
36. In a bridge rectifier circuit, the current rating of the diode is ……… of the maximum load current.
•Three times
•Two times
•Half
•Same
Answer. Half
37. The energy loss in the core of a transformer due to reversal of magnetism of the iron core is called ………… of the transformer?
•Eddy current loss
•Hysteresis loss
•Flux leakage loss
•Core saturation loss
Answer. Hysteresis loss
38. Unit of measurement of electromotive force (EMF)
•Volt
•Coulomb
•Ampere
•Watt
Answer. Volt
39. For soldering diodes, transistors and ICs etc., soldering iron of …… watt should be used?
•10 to 25
•25 to 60
•60 to 100
•100 to 150
Answer. 10 to 25
40. POST stands for-
•Power of Software Tasks
•Provision of Standard Tools
•Power on Self Test
•Preparation of Soft Tools
Answer. Power on Self Test
41. The maximum reverse voltage that a diode can bear is known as?
•Peak voltage
•RMS voltage
•Barrier voltage
•Peak inverse voltage
Answer. Peak inverse voltage
42. An output device in a computer system is-
•Monitor
•Mouse
•Keyboard
•Power Supply
Answer. Monitor
43. A system that connects logically separate networks composed of multiple network segments with two or more different protocols and infrastructure is called….
•Server
•Modem
•Router
•Mixer
Answer. Router
44. Shunt is a ……… value resistor connected with MC meter to make ……… ammeter.
•High, parallel
•Low, parallel
•Low, series
•High, series
Answer. Low, parallel
45. Resistances of 5 ohm and 10 ohm are connected in service with a 30 V DC supply. The current through the whole 10 ohm resistance is
•4A
•2A
•10A
•8A
Answer. 2A
46. The ability of a coil to oppose a current flowing through it is called?
•Capacitance
•Inductance
•Conductance
•Impedance
Answer. Inductance
47. Which of the following metals has the highest electrical conductivity?
•Aluminum
•Copper
•Silver
•Gold
Answer. Silver
48. The value of the coefficient of coupling K in the coil of an AC mains transformer is approximately?
•1
•0.8
•0.6
•0.5
Answer. 1
49. Moving coil (MC) meter has …… scale and moving iron (MI) meter has ……….. scale.
•Unequal, uniform
•Unequal, uniform
•Unequal, unequal
•Unequal, unequal
Answer. Uniform, unequal
50. Which diode is used in reserve biased condition for voltage regulation?
•Zener diode
•Tunnel diode
•Rectifier
•Varactor diode
Answer. Zener diode
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