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問題一覧
1
What is typical range of valves that vary widely in form, application and sizes?
0.1 mm to 60 cm
2
Which of the following is not a type of valve?
eccentric valve
3
What will be the form of a gas or liquid when it will be heated?
Expand
4
Which material is not used to make a valves?
wood
5
Which of the following components are used to prevent the leakage of a gas or fluids from valves?
gasket
6
Which component is used to manually control a valve from out side the value body?
handle
7
in which shape three way ball valves come in fluid passageways inside the rotor?
T or L
8
If the handle is turned 90 degree between operating position the valve is called?
Quarter turn valve
9
Which of the following valves has four ports equally spaced around the body?
Four way valve
10
What is the material of weight carrier part of dead weight safety valve?
cast iron
11
Valve of a pressure cooker is an example of which type of safety valve ?
dead weight
12
Where the seat is secured in a vertical hollow pipe in a dead weight safety valve?
To the top end
13
Spring loaded safety valve is also called?
rams bottom safety valve
14
Which part is used in Rams bottom safety valve to act when the steam pressure exceeds the set values and allow the steam to escape?
spring
15
When the sprig is compressed by nuts on the pillars, by which object its length being adjusted?
collars
16
What is the material of lever in safety valves?
c. s
17
How many steel bearing are used in a lever safety valve?
01
18
Which object is placed near the fulcrum end of the lever through which the load is adjusted?
counter weight
19
In the fire tube boilers content of tubes are?
hot gas
20
Which of these is an externally fired boiler?
Lancashire boiler
21
Which arrangement is used to increase the temperature of saturated steam without raising its pressure?
super heater
22
Which of the following device is used to remove dissolve gases from boiler feed water?
Deaerator
23
What is called the standard condition of 20°C and 101.3 kpa ?
NTP
24
Which of the following mountings used in steam boiler ?
safety valve
25
Which material is generally used to make blow off cock?
gun metal
26
Where the blow off cock fitted?
lower part of boiler
27
Where a gland & stuffing box arrangement is provided in blow of cock?
cover
28
Which of the followings is used to remove impurities from boiler?
Blow off cock
29
Which type of device is Hydraulic jack?
mechanical device
30
Which of the following factors generate force and on which hydraulic jack depend?
Pressure
31
Which part is used as a lifting device to lift heavy load?
ram
32
Which is the most frequently used accumulator type?
Compressed gas accumulator
33
On which principal Spring type accumulator works?
Hooke's law
34
Which of the following has storage reservoir where liquid is stored under pressure?
Hydraulic Accumulator
35
What is the medium used in pneumatic system?
air
36
Which one is pneumatic system?
Air brakes on a truck
37
How many ports & positions in a 3/2 direction control valve?
3 ports & 2 positions
38
Which is not the basic feature of drill jig?
screw jack
39
How many types of a drill bush?
03
40
Which of the following materials is used to make a bench vice body?
cast iron
41
Why is vice clamp used?
To hold the job strongly
42
Which type of thread is cut on the spindle of bench vice?
square thread
43
What is the use of template?
Marking on job
44
Which jig has no base plate?
Plate jig
45
Which of the following is not the function of a jig?
Finishing
46
Which jig has no base?
Channel jig
47
Which of the following operation jigs are not used?
milling
48
What is the use of hand vice?
To hold the small size of job
49
What is the length of a handle of vice?
2.5 times of nominal size of vice
50
Which device is used to hold the work piece securely in a jig or fixture against the cutting force?
Clamping device