test for operators

1. ‫الرحيم‬ ‫الرحمن‬ ‫هللا‬ ‫بسم‬
Process plant troubleshooting pretest
Q1. List five of the process equipment
Q2. The Troubleshooting process means that:
a) Try to solve a problem
b) Try to locate the problem
c) Using problem elimination technique to locate the problem
Q3. Vibrating pump may be due to:
a) Bearing wear
b) Looseness
c) Non suitable lubrication
d) All of the above
Q4. Problems in heat exchangers could be due to:
a) Scale forming inside the tubes
b) Hot spots
c) Tube leaking
d) All of the above
Q5. Tube rapture in a boiler could be due to:
a) Flame impinging on the tube
b) Uneven heating
c) All of the above
Q6. Cavitating pump mean that:
a) Air entering into pump suction lines
b) Gas collecting in the pump casing

2. c) Bubble formation in the suction side of the pump
Q7. One of the causes of Compressor surge:
a) Suction valve partially closed
b) Discharge Pressure higher than the design
c) Too low discharge pressure
Q8. Which one of the following valves is not suitable as a control valve?
a) Gate valve
b) Globe valve
c) Plug valve
Q9. The rule of the governor in a steam turbine:
a) Control turbine speed
b) Increase the speed
c) Save energy used by the stem
Q10. List three differences between compressors and pumps