ITI Question Answer and Paper Solution

SAFETY PRECAUTION AND FIRST AID

Short Answer Question

Q:1.Basically there are four types of safety sings.Among the four, two sings are prohibition sing and warning sing.

       What are the other two types of sing?

Ans:1.Mandatorysing, information sing.

Q:2.The shape and colour of prohibition sing is circular and red        border and cross bar, black symbol on white background.

 What is the shape and colour of warning sing?

Ans:2.Shape-tringluar,colour-yellow background with black border and symbol.

Q:3.Safety sing are represented by different shspe and colours.

      What are the uses of safety sing ?

Ans:3.It provides specific information to us, such as prohibited,warning and informative.

Q:4.Which type of sing is used to indicate the "hospital is ahead"?

Ans:4.Information sing.

Q:5.What are the safety measures to be followed before working on capacitors and line equipment having static voltage?

Ans:5.Static voltage should be discharged before working on.

Q:6.There are three basic ways for extinguishing fire.One way is by cooling (reducing temperature).

      Name the other two way.
Ans:6.a)By starving the fire by removing fuel.
          b)By smoothening (Isolating fire from supply of oxygen by blanketing).

Q:7.Fire classified into four types in terms of the nature of fuel. They are class-A,class-B class-C and class-
      D.
Which class does the electrical fire belong to?
Ans:7. Class-D

Q:8.Fire from wood ,cloth and paper are classified as class 'A' fire.
 
      Which class of fire erupts from liquefied gas and gas?
Ans:8. Class- C.

Q:9.There are two methods of operation for water-filled extinguishers.

       What are the two methods?
Ans:9.Gas discharge type and stored pressure type.

Q:10.What will happen to a man, when he touches a metal part of an electrical accessories having earth
        fault?
Ans:10.Electric shock.

Q:11.The severity of an electric shock depends on two factors. One factor is length of time of the
         contact.

         What is the other factor?
Ans:11.Current rating.

Q:12.A current of 5mA and above passing through a human body during an electric shock is very much
         dangerous.

         The magnitude of an electric shock is based on which two factors?
Ans:12. a)Level of the current which passes through the body.
             b)Length of time of the contact.

MUMTIPLE CHOICE QUESTIONS

Q:1.person coming in contact with live wire gets shock .Person receiving shock may be thrown off or may
      be still in contact with the live wire.

      What is the first step you would like to take to rescue a person who is in contact with live wire?
A.Call for doctor immediately.
B.Pull him away from live wire holding his hand .
C.Isolate him from the live wire.
D.Shift him to hospital.

Ans:1.(C)Isolate him from the live wire.

Q:2.Name the category of the sing given below?

A.  Mandatory sing
B.  Warning sing.
C.  Information sing.
D.  Prohibition sing.





Ans:2.   (B)Warning sing

Q:3.Which is the warning sing shown of the following?

                

Ans:3.    (c)

Q:4.Water should never be used on .............. classification of fire.

      A.   Class - A

      B.   Class - B

      C.   Class - C

      D.   Class - D

Ans:4.   (D)  Class - D.

Q:5.Which type of fire extinguisher is to be used on electrical equipment insulation under fire?

      A.   Foam type

      B.   Halon type

      C.   Gas cartridge water filled type 

      D.   Stored pressure, water filled type

Ans:5. (B) Halon type.

Q:6.What is the factor which is not a cause for electric fire?

      A.   Wrongly rated fuses.

      B.   Loose connection.

      C.   Damaged insulation between line and neutral.

      D.   Phase reversal in 3 phase system.

Ans:6. (D) phase reversal in 3 phase system.

Q:7.When a fuse metals, it has to be replaced as per current rating of the circuit.

       Which of the following is to be followed during replacing the fuse?

      A.   Switch off the particular circuit.

      B.   All are switched off

      C.   Fuse to be replaced during the circuit is in power.

      D.   Load to be disconnected.

Ans:7.  (A) Switch off the particular circuit.

Q:8.You have to replace a fused lamp or a defective fan.

      In such a case, the safest way in which you can do is to .................

      A.   Stand on a wooden stool or a work horse.

      B.   Collect and use rubber gloves.

      C.   Switch-off the single pole switch.

      D.   Switch-off the main supply.

Ans:8.  (D) Switch-off the main supply.

MATCH THE FOLLOWING

Q:1.Match the fire on material with the classification of fire.

      Type of material

      1.   Wood, Paper, Cloth.

      2.   Oil, Grease, Paint.

      3.   Liquefied gas.

      4.   Metal.

      5.   Electrical equipment.

      Classification of fire

      A.   Class A

      B.   Class B

      C.   Class C

      D.   Class D

Ans: 1.  1.[A]    2.[B]    3.[C]    4.[D]    5[D]

Q: 2.Match the explanations with the mandatory sings.

      Explanations

      

      1.   Wear hearing protection.

      2.   Use adjustable guard.

      3.   Wear safety harness

      4.   Wear safety belt.

      5.   Wear foot protection

      Mandatory sings

       

Ans: 2.  1.[B]    2.[A]     3.[D]    4.[D]    5.[C]