Quiz Questions - ITI Quiz - 26-May-2026 06:10 AM

Question 1 1 Marks

Which bonding material is used for soldering a joint?

A

Oil

B

Flux

C

Acid

D

Grease

Question 2 1 Marks

At which temperature the 6040 solder start meeting?

A

100 Degree Centigrade

B

200 Degree Centigrade

C

300 Degree Centigrade

D

380 Degree Centigrade

Question 3 1 Marks

Which step is important for soldering a joint?

A

Heating the joint

B

Cooling the joint

C

Pasting the joint

D

Cleaning the joint

Question 4 1 Marks

What is the range of temperature used in soldering station?

A

150 Degree Centigrade to 450 Degree Centigrade

B

450 Degree Centigrade to 600 Degree Centigrade

C

600 Degree Centigrade to 800 Degree Centigrade

D

800 Degree Centigrade to 1000 Degree Centigrade

Question 5 1 Marks

What is the name of flux used for soldering electronic components?

A

Resin

B

Rosin

C

Mild acid

D

Organic acid

Question 6 1 Marks

How many types of soldering is used for joining metal surfaces?

A

Two

B

Five

C

Four

D

Three

Question 7 1 Marks

What is the full form of the abbreviation SPDT used in switches?

A

Single Phase Dual Throw

B

Single Pole Single Throw

C

Single Pole Double Throw

D

Shared Pole Double Throw

Question 8 1 Marks

Which ratio of tin-lead combination is used for electronic component soldering work?

A

40:60

B

20:40

C

60:40:00

D

63:37:00

Question 9 1 Marks

What is the full of the abbreviation DPDT used in switches?

A

Dual Phase Dual Throw

B

Double Pole Direct Throw

C

Direct Pole Double Throw

D

Double Pole Double Throw

Question 10 1 Marks

How much time is required to make a quality soldered joint using soldering iron?

A

3 - 7 seconds

B

7 - 10 seconds

C

10 - 15 seconds

D

15 - 20 seconds

Question 11 1 Marks

Which type of soldering is used for electronic circuit?

A

Brazing

B

Soft soldering

C

Hot soldering

D

Hard soldering

Question 12 1 Marks

How the flux residue is removed after soldering a joint?

A

Water

B

Petrol

C

Organic flux

D

Isopropyl alcohol

Question 13 1 Marks

What is the effect of over heating on soldering a joint?

A

Cold joint

B

Poor wetting

C

Dull grainy surface

D

Flux trapped against lead

Question 14 1 Marks

Why the solvent Iso Propyl Alcohol (IPA) is used on the solder joint?

A

To help the corrosive action

B

Cleaning before soldering the joint

C

To break down the acid within the joint

D

Remove residual flux and prevent corrosion

Question 15 1 Marks

Which tool works on the principle of air suction?

A

Soldering iron

B

Soldering wick

C

Desoldering braid

D

Desoldering pump

Question 16 1 Marks

What is the common and popular application of U.J.T?

A

Multivibrator

B

Voltage regulator

C

Relaxation oscillator

D

Motor speed controller

Question 17 1 Marks

What is the maximum forward gate current (Ig) for BFW10 JFET?

A

5 mA

B

8 mA

C

10 mA

D

20 mA

Question 18 1 Marks

What is the package type for BF 245B?

A

TO-72

B

TO-92

C

TO-82

D

TO-102

Question 19 1 Marks

What is the gate current (Ig) of the JFET, when reverse biased?

A

Practically very low

B

Practically zero

C

Practically unity

D

Practically infinity

Question 20 1 Marks

Which device is a unipolar transistor?

A

UJT

B

FET

C

BJT

D

IGBT

Question 21 1 Marks

Which is the package type for the JFET BFW10?

A

TO-62

B

TO-72

C

TO-82

D

TO-92

Question 22 1 Marks

What is the term stands for TRIAC?

A

Triode Alternate control

B

Triode DC semiconductor

C

Triode AC semiconductor

D

Triode Access console

Question 23 1 Marks

What is the code number of TRIAC?

A

2N2646

B

BFW10

C

BT136

D

2N1597

Question 24 1 Marks

Which current flows in TRIAC between MT1 and MT2?

A

Conventional current

B

Principal current

C

Reverse current

D

Leakage current

Question 25 1 Marks

What is the switching speed of solid state relays?

A

1 to 25 nano seconds

B

10 to 60 nano seconds

C

1 to 100 nano seconds

D

1 to 100 milli seconds

Question 26 1 Marks

Which is the device made and interconnected by two transistors?

A

UJT

B

SCR

C

FET

D

LED

Question 27 1 Marks

How many layers of PN - junctions are used in SCR fabrication?

A

Two layer two junctions

B

Four layer three junctions

C

Three layer three junctions

D

Three layer four junctions

Question 28 1 Marks

What is the function of solid state relay(SSR)?

A

Low pass filter

B

High frequency oscillator

C

High gain amlifier

D

High speed switching

Question 29 1 Marks

Which measuring instrument is used to make quick test on a TRIAC?

A

Ammeter

B

Ohmmeter

C

Voltmeter

D

Oscilloscope

Question 30 1 Marks

What type of control is used for FET?

A

Resistance controlled device

B

Voltage controlled device

C

Current controlled device

D

Frequency controlled device

Question 31 1 Marks

Which parameter controls the current flow in a BI-polar transistor?

A

Voltage

B

Current

C

Frequency

D

Resistance

Question 32 1 Marks

How gate is biased in JFET?

A

AC supply function

B

Forward biased

C

Reverse biased

D

Dual supply function

Question 33 1 Marks

What is the resonant frequency range of a crystal?

A

Between 0.1 and 1MHZ

B

Between 0.1 and 10 MHZ

C

Between 0.5 and 25 MHZ

D

Between 0.5 and 30 MhZ

Question 34 1 Marks

Which circuit is determined by the frequency of LC tank circuit?

A

Oscillator

B

Amplifier

C

Multiplexed

D

Demodulator

Question 35 1 Marks

What type of arrangement is required to sustain the oscillations of the oscillator circuit?

A

Provide negative feedback

B

Provide regenerative feedback

C

Increase the bias voltage

D

Increase the value of inductor

Question 36 1 Marks

What type of feed back is used by the Wein-bridge oscillator to oscillate the signal?

A

No feedback

B

Positive feedback

C

Negative feedback

D

Both positive and negative feedback

Question 37 1 Marks

How to improve the frequency stability in oscillator circuits?

A

Increase the supply voltage

B

By using quartz crystal

C

Using L and C

D

Improve the property of circuits

Question 38 1 Marks

Which is the transistor used to operate the Colpitts oscillator?

A

AC 127

B

BF 194B

C

BC 148B

D

AC 188

Question 39 1 Marks

How many transistors are built inside the Very Large Scale Integration (VLSI) IC package?

A

1000 and above

B

1 to 10 transistors

C

10 to 100 transistors

D

100 to 1000 transistors

Question 40 1 Marks

Which IC package consist of 100 to 1000 transistors?

A

Large scale integration (LSI)

B

Small scale integration (SSI)

C

Medium scale integration (MSI)

D

Very large scale integration (VLSI)

Question 41 1 Marks

Which is the 3 terminal, negative voltage regulator IC?

A

LM 320

B

LM 340

C

IC 7905

D

IC 7812

Question 42 1 Marks

Which three terminal voltage regulator IC has adjustable output?

A

LM 100

B

LM 105

C

LM 305

D

LM 317

Question 43 1 Marks

What is the range of output voltage of regulator IC LM 317?

A

0 to 25 V

B

0 to 30 V

C

0 to 32 V

D

1.2 V to 32 V

Question 44 1 Marks

Which type of voltage regulator is IC 723?

A

Multipin variable voltage regulator

B

Three pin positive voltage regulator

C

Three pin negative voltage regulator

D

Three pin adjustable voltage regulator

Question 45 1 Marks

Which component filter the ripples in the rectifier circuit?

A

DIAC

B

Diode

C

TRIAC

D

Capacitor

Question 46 1 Marks

Which parameter is maintained constant in zener diode?

A

Power

B

Current

C

Voltage

D

Resistance

Question 47 1 Marks

What is the meaning of maximum safe reverse voltage across a diode?

A

PIV voltage

B

Knee voltage

C

Break down voltage

D

Reverse break down voltage

Question 48 1 Marks

When does the zener diode begins to conduct in the reverse biased condition?

A

When bias voltage reached 0.7V

B

After the barrier voltage cancelled

C

Voltage across zener reached 0.3V

D

Voltage across it reached the zener voltage

Question 49 1 Marks

What is the output pulse frequency of the full wave rectifier with input frequency of 50 Hz?

A

40 Hz

B

60 Hz

C

100 Hz

D

200 Hz

Question 50 1 Marks

Which diode is used in low power communication circuits?

A

Signal diodes

B

Rectifier diodes

C

Switching diodes

D

High power diodes

Question 51 1 Marks

What is the disadvantage of the two diode full wave rectifier compared with a bridge rectifier?

A

DC output level is higher

B

The ripple frequency is higher

C

The need of bulky transformer

D

Each diode carries half the load current

Question 52 1 Marks

What is the process of adding impurities to a pure semi conductor material?

A

Doping

B

Etching

C

Forming

D

Diffusion

Question 53 1 Marks

Which impurity is added to form P - type semiconductor material?

A

Arsenic

B

Gallium

C

Antimony

D

Phosphorus

Question 54 1 Marks

Which impurity is added to pure semiconductor to form N-type material?

A

Boron

B

Indium

C

Arsenic

D

Gallium

Question 55 1 Marks

What is the output frequency of the pulsating DC in a two diode fullwave rectifier?

A

Half of the input A/C frequency

B

Double the input A/C frequency

C

Same frequency of the A/C input

D

Three times the input A/C frequency

Question 56 1 Marks

What is the name of the process of converting AC into DC voltage?

A

Inverting

B

Rectifying

C

Amplifying

D

Demodulating

Question 57 1 Marks

Which coding system for transistor type numbering system is followed by American standard?

A

JIS standard

B

Home codes

C

JEDEC standard

D

PRO-ELECTRON standard

Question 58 1 Marks

What is the current gain of common collector amplifier?

A

Low

B

High

C

Medium

D

Very high

Question 59 1 Marks

What in the current gain of a common ? base amplifier?

A

Unity

B

Infinity

C

Greater than 1

D

Less than 1

Question 60 1 Marks

What is the meaning of first letter indicated in the transistor code number BC 107?

A

Germanium material used

B

Silicon material used

C

Antimony material used

D

Indium material used