1. A hydraulic pipe bending machine can bent the pipe up to a diameter of ?

25 mm

50 mm

75 mm

100 mm

Answer: 75 mm

Explanation:


2. Which one of the following is the included angle of pipe thread ?

29°

55°

60°

90°

Answer: 55°

Explanation:


3. Which among the following is the cause for loud noise in the tap when turned on ?

spindle bent

valve on the spindle loose

defective washer

spindle threads worn-out

Answer: valve on the spindle loose

Explanation:


4. ____________ is used to couple two pipes having different diameters ?

socket

Tee

elbow

reducer

Answer: reducer

Explanation:


5. What type of are cut in water pipes and there accessories ?

metric

square

bsp

bsw

Answer: bsp

Explanation:


6. Which of the following is used for separation of joint connection that allows the assembly to be dismantled for inspection repair or replacement operations ?

union

Tee

cross

elbow

Answer: union

Explanation:


7. The work of pipe bender template is ?

for drilling in the pipe

check the radius of bended pipe

for bending the pipe

all of these

Answer: for bending the pipe

Explanation:


8. Which among the following is the cause for tap hard to turn on and off ?

spindle bent

valve on the spindle loose

defective washer

spindle threads worn-out

Answer: spindle bent

Explanation:


9. The pressure in glove valve is usually ?

on the right side

on the left side

under the seat

none of the above

Answer: under the seat

Explanation:


10. Which one of the following is used to control the flow of water ?

swing check valve

glove valve

gate valve-rising stem

gate valve-none-rising stem

Answer: glove valve

Explanation: