Quiz Questions - ITI Quiz -

Question 1 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 2 1 Marks

What is the name of defect if the flux is unable to remove the tarnish from the soldered joint?

A

Cold joint

B

Poor wetting

C

Pits and voids

D

Dull gravity surface

Question 3 1 Marks

How the thick layers of oxide is removed before doing the soldering activity?

A

Apply flux

B

Clean normally

C

Use abrasive method

D

Use Isopropyl Alcohol

Question 4 1 Marks

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

A

Resin

B

Rosin

C

Mild acid

D

Organic acid

Question 5 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 6 1 Marks

What is the result of forced air is blown to cool the joint while soldering?

A

Solder setting very slowly

B

Results in dry brittle joint

C

Disturbs the chemical bonding

D

Joint becomes mechanically stronger

Question 7 1 Marks

What is the purpose of flux in soldering electronic circuit components?

A

Form the oxide layer

B

Reduce the solder cooling time

C

Increase the melting temperature of solder

D

Dissolve the oxide layer on the metal surface

Question 8 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 9 1 Marks

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

A

Two

B

Five

C

Four

D

Three

Question 10 1 Marks

Which gauge number of rosin-cored solder is suitable for soldering medium sized joints?

A

16 gauge rosin cored

B

18 gauge rosin cored

C

22 gauge rosin cored

D

24 gauge rosin cored

Question 11 1 Marks

Which bonding material is used for soldering a joint?

A

Oil

B

Flux

C

Acid

D

Grease

Question 12 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 13 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 14 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 15 1 Marks

Which type of soldering is used for electronic circuit?

A

Brazing

B

Soft soldering

C

Hot soldering

D

Hard soldering

Question 16 1 Marks

What is produced by the power supply connected soldering iron?

A

Fire

B

Heat

C

Cool air

D

Water vapour

Question 17 1 Marks

How the flux residue is removed after soldering a joint?

A

Water

B

Petrol

C

Organic flux

D

Isopropyl alcohol

Question 18 1 Marks

What is the effect of shaking the soldered joint while cooling?

A

Flux will not dissolve

B

It will corrode the joint

C

It results in oxidation of solder

D

It disturbs the chemical bonding take place

Question 19 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 20 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 21 1 Marks

Which tool works on the principle of air suction?

A

Soldering iron

B

Soldering wick

C

Desoldering braid

D

Desoldering pump

Question 22 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 23 1 Marks

When does the rosin flux melts in a soldering process?

A

After the solder melts

B

When the solder is melting

C

During the solder is melting

D

When the solder is heated

Question 24 1 Marks

How is the soldering method used for joining large metal called?

A

Welding

B

Brazing

C

Hot soldering

D

Soft soldering

Question 25 1 Marks

What is the defect on the soldered joint, if it is cooled by blowing air?

A

Poor wetting

B

Pits and voids

C

Dry solder joint

D

Dull grainy surface

Question 26 1 Marks

Why the plunger desoldering tool needs periodical cleaning?

A

To melt the solder quickly

B

To help the joint to be soldered

C

To prevent clogging of the nozzle

D

To remove the flux collected in chamber

Question 27 1 Marks

Which soldering instrument has hot air blowing facility?

A

Soldering iron

B

Soldering station

C

Wave soldering machine

D

Temperature controlled soldering iron

Question 28 1 Marks

What is the additional advantage of rosin flux used for soldering electronic components?

A

It is non-conductive

B

It is good conductor

C

It is a chemical paste

D

Inorganic acid in nature