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Working Principle of Pressure measurement in gauge involves..........

一个。Seebeck effect

b。科里奥利效应

C。Bourdon Gauge

d。Wheatstone bridge

热电偶的工作原理........

一个。Seebeck effect

b。科里奥利效应

C。Wheatstone bridge

d。Pareto Effect

Which one of the following Flow meter is a Head Type?

一个。Ultrasonic

b。Coriolis

C。涡轮计

d。Venturi

Permanent Head Loss is less in

一个。Venturi Meter

b。孔仪表

Averaging Pitot (Annubar) has

一个。Low Accuracy

b。High Accuracy

For LPG Mass flow measurement preferred instrument is .........

一个。孔仪表

b。Coriolis

C。Venturi

d。Magnetic

In Which type of Control - Output of one controller goes as set point to the another controller which controls the Control Valve

一个。Feedback control

b。前馈控制

C。Cascade Control

d。上述所有的

在工艺条件下运行的液体流量测量表的任何流量计给予了什么补偿，与设计不同……

一个。Pressure

b。Temperature

C。比重

d。Molecular Weight

e。上述所有的

Bubble Tube Purge for Level Measurement is used for level measurement in ....

一个。Ashphalt

b。柴油机

Wet Leg measurement is used in ......

一个。冷凝液位测量

b。没有冷凝液位测量

Advantages of External Level Bridle is

一个。Can be useful to reduce Weld joints in vessel

b。Can be useful in installing multiple level measurement devices

C。Can be useful in lined or cladded or stress relieved vessels

d。上述所有的

e。None of the above

坦克中的浮子仪被替换为......

一个。Magnetic Gauge

b。Radar Tank Gauge

C。仪表玻璃

d。Level Switch

Duplex Thermocouple has …………………. Number of Thermowell(s)

一个。One

b。二

An Example for Non-contact type temperature measuring device.........

一个。Thermocouple

b。RTD

C。皮肤热电偶

d。光学高计

Three Elements used in Boiler Steam Drum Level Control are..........

一个。蒸汽流，蒸汽压力，蒸汽温度

b。馈送水流，鼓电平，蒸汽流动

C。Feed Water Pressure, Drum Level, Feed Water Flow

d。Drum Level, Feed Water Pressure, Steam Pressure

控制蒸汽头网络中LP Steam标头压力的最佳选择是....................................

一个。Split Range Control with Reduced Pressure Control by admitting steam from HP Steam Header and Back Pressure Control be venting excess steam from LP steam header

b。Back Pressure Control be venting excess steam from LP steam header

C。通过接受HP蒸汽头的蒸汽来降低压力控制

d。None of the above

What type of control is employed in the following scenario?

Fired heater outlet temperature is controlled by varying the flow in the fuel gas line.

一个。Feedback control

b。前馈控制

C。Cascade Control

d。上述所有的

For Air blower suction, the preferred control valve type is

一个。Cage Valve

b。球阀

C。双座阀

d。Butterfly Valve

Volume tank in the control valve is used in

一个。All the Control Valves

b。In Valves that require a back up in case loss of instrument air supply

Which one of the following Control Valve is not suitable for Tight Shut off Application?

一个。闸阀

b。球阀

C。Diaphragm Valve

d。Butterfly Valve

Which one of the following Control Valve Characteristic is preferred in frequent On-Off Service?

一个。Linear

b。Equal Percentage

C。Quick Opening

d。Any one of the Above

e。None of the Above

哪个控制阀泄漏类别泄漏较低？..... .....

一个。ANSI Class I

b。ANSI Class II

C。ANSI Class III

d。ANSI Class IV

Erosion in control vale is minimised by Hard facing the trim of the control valve with .......

一个。Stellite

b。钨碳化物

C。Both A & B

d。None of the Above

Which one of the following is used in Control Valve where a specific valve/actuator action is required when supply pressure falls below a specific value? ..........

一个。Solenoid

b。跳闸阀

C。I/P Transducer

d。执行器

High and Low selector is used in ........

一个。Fuel/ Air Ratio Control

b。Boiler Drum Level Control

C。Tower Temperature Control

d。Bottom Level Control