# Check Your City Gas IQ

35 Questions | Total Attempts: 121  Settings  • 1.
What is SDR?
• A.

Standard Dimension Ratio

• B.

Standard Diameter Ratio

• C.

• D.

Standard Diameter Rating

• 2.
Does ASME B31.8 cover Plastic Pipe Design?
• A.

Yes

• B.

No

• 3.
PE is which form of plastic?
• A.

Thermoplastic

• B.

Thermosetting Plastic

• 4.
Formula for Hoop Stress is,
• A.

2.P/D.t

• B.

2.P.D/t

• C.

2.D/P.t

• D.

P.D/2.t

• 5.
ANSI B16.34 is for,
• A.

Cast Iron Gate Vales

• B.

Steel Valves

• C.

Brass or Bronze Flanges and flanged fittings

• D.

None of the above.

• 6.
As per ASME B31.8, how many Location Classes can exist?
• A.

3

• B.

4

• C.

5

• D.

6

• 7.
'Higher the location class, higher the Design Factor for pipeline.'True or False?
• A.

True

• B.

False

• 8.
Diversity Factor =
• A.

Max. Actual Demand/Max. Potential Demand

• B.

Max. Potential Demand/Max. Actual Demand

• C.

Min. Actual Demand/Max. Potential Demand

• D.

Max. Potential Demand/Min. Actual Demand

• 9.
As per IGE/TD/3, Smooth Pipe Law can be applied to Natural Gas systems of MOP not exceeding,
• A.

7 bar

• B.

10 bar

• C.

19 bar

• D.

35 bar

• 10.
SDR is
• A.

Min. Outside Diameter/Min. Wall Thickness

• B.

Min. Outside Diameter/Max. Wall Thickness

• C.

Max. Outside Diameter/Min. Wall Thickness

• D.

Max. Outside Diameter/Max. Wall Thickness

• 11.
Which sequence (descending ) is correct under normal operation? (Where STP=Strength Test Pressure, MIP=Maximum Incidental Pressure, OP = Operating Pressure, MOP=Maximum Operating Pressure)
• A.

MIP, STP, MOP, OP

• B.

STP, MIP, MOP, OP

• C.

STP, MOP, MIP, OP

• D.

MOP, STP, MIP, OP

• 12.
'Higher the Grade of API 5L pipe, lower the SMYS.' True or False?
• A.

True

• B.

False

• 13.
Which is the ASME standard for Managing System Integrity of Gas Pipelines?
• A.

ASME B31.1

• B.

ASME B31.2

• C.

ASME B31.3

• D.

ASME B31.8S

• 14.
As per Pipeline Research Committee International (PRCI), how many threats can exists for a pipeline?
• A.

21

• B.

10

• C.

15

• D.

5

• 15.
'Risk' is the mathematical product of,
• A.

Probability and Consequences

• B.

Probability and Likelihood

• C.

Probability and Length of pipeline

• D.

Probability and no. of joints

• 16.
'HAZID and HAZOP are types of Risk Assessment. True or False?
• A.

True

• B.

False

• 17.
Why is natural gas compressed for vehicular use?
• A.

To increase the mileage of the vehicle

• B.

To reduce the time of filling

• C.

To increase the storage capacity

• D.

To push the gas through engine

• 18.
What is the function of cascade in CNG filling stations?
• A.

To act as a buffer.

• B.

To reduce the no. of operating cycles of the compressor.

• C.

Reduce the gas filling cycle time.

• D.

All of the above.

• 19.
Can Diesel vehicles be converted to CNG?
• A.

Yes

• B.

No

• 20.
What would be the min. bend radius for PE pipe? (D=180mm, SDR=11)?
• A.

10m

• B.

7.5m

• C.

5.5m

• D.

4.5m

• 21.
'LPG is lighter than natural gas.' True or False?
• A.

True

• B.

False

• 22.
• A.

Supervisory Control And Data Acquisition

• B.

System Control And Data Acquisition

• C.

Supervisory Control And Data Acceptance

• D.

Superficial Control And Data Acquisition

• 23.
What is the typical CV of natural gas?
• A.

8500 kcal/m3

• B.

8500 kcal/kg

• C.

8500 kJ/m3

• D.

8500 kJ/kg

• 24.
What does '100' denote in PE 100 pipe?
• A.

Long term hydrostatic strength = 10 bar

• B.

Long term hydrostatic strength = 100 bar

• C.

Long term hydrostatic strength = 1 MPa

• D.

Long term hydrostatic strength = 100 Mpa

• 25.
What is the typical density of PE pipe?
• A.

750 kg/m3

• B.

800 kg/m3

• C.

944 kg/m3

• D.

1000 kg/m3