assingment

JAN-16

Fri, 22 Jan 2016 12:28:12 +0100

1. State the advantages of hot wire instruments
Ans - a) Measure both AC & DC , B) Less sensitive to stray magnetic field

2. Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference
Ans- a) Peltier , b) Thomson , c) Seebeck

3. Typical specifications for design stipulates the gain margin and phase margin to be respectively
Ans- a) >1.7 and >30 deg , b) <1.7 and <30 deg

4. A negative gain margin expressed in decibels means a/an __________ system.
Ans- a) Critically damped , b) Unstable

5. Smoke density of the flue gas going out of the chimney is measured by a
Ans- a) Polarograph , b) Photo electric cell

July-15

Tue, 30 Jun 2015 17:54:53 +0100

1.	In steam power generation,what is IGCC means.

A.	Integrated Geothermal Complete Cycle

B.	Integrated Gas Combined Cycle

C.	Integrated Gasification Combined Cycle

D.	International Gasification Combined unit Cycle

2.	An engine or turbine that moves the generator.

Propeller

B.	Prime mover

Condenser

Shafting

3.	This is the reduction gear between the prime mover and generator.

Load gear

B.	Reduction gear

C.	Bevel gear

Clutch

4.	A steam turbine that exhausts directly into a condenser at below atmospheric pressure.

A.	Back pressure turbine

B.	Condensing turbine

C.	Extraction turbine

D.	High pressure turbine

5.	In a steam turbine generator, it is also known as bleed.

A.	Extraction

Exhausts

Excess

Extrusion

6.	NCG which is always present in geothermal steam, causes power plant inefficiencies that result in increased steam consumption and higher plant costs. What NCG does mean?

A.	Nitrogen Condenser gas

B.	Non-Condensable gas

C.	No Condensate gas

D.	New Condensed gas

March'15

Wed, 01 Apr 2015 06:23:24 +0100

1) How to determine the moment of inertia on rotor of a turbo-generator?

2) What is use of oil vapor extraction system?

3) What you will do if all of the DCS in your power plant hang-up - explain the role of FRS(Feed Regulating Station)?

4) Explain the role of generator circuit breaker is suddenly the RPM of turbine goes beyond the critical RPM?

5) Explain the two laws used in d-aerator for removal of condensate,air and to maintain reference level?

QUESTION OF THE MONTH -OCTOBER 14

Mon, 13 Oct 2014 17:22:45 +0100

1.	In steam power generation,what is IGCC means.

A.	Integrated Geothermal Complete Cycle

B.	Integrated Gas Combined Cycle

C.	Integrated Gasification Combined Cycle

D.	International Gasification Combined unit Cycle

2.	An engine or turbine that moves the generator.

Propeller

B.	Prime mover

Condenser

Shafting

3.	This is the reduction gear between the prime mover and generator.

Load gear

B.	Reduction gear

C.	Bevel gear

Clutch

4.	A steam turbine that exhausts directly into a condenser at below atmospheric pressure.

A.	back pressure turbine

B.	condensing turbine

C.	extraction turbine

D.	high pressure turbine

5.	In a steam turbine generator, it is also known as bleed.

A.	extraction

exhausts

excess

extrusion

6.	NCG which is always present in geothermal steam, causes power plant inefficiencies that result in increased steam consumption and higher plant costs. What NCG does mean?

A.	Nitrogen Condenser gas

B.	Non-Condensable gas

C.	No Condensate gas

D.	New Condensed gas

7.	For a boiler plate, what would be the minimum plate thickness considering a 1/16" corrosion allowance.

1/4"

3/4"

5/16"

3/16"

8.	In Superheater operation the steam piping is directed through the flue gas path in the boiler furnace. The temperature in this area is typically ranging from.

A.	1300-1600 C

B.	1350-1700 C

C.	1100-1200 C

D.	900-1000 C

9.	It is used to relieve pressure and prevent possible explosion of the boiler.

A.	shut off valve

B.	safety valve

C.	bull valve

D.	fuel valve

10.

It is a mechanical means that is used to turn off the burner or shut off fuel to the boiler to prevent it from running, once the water goes below a certain point.

A.	shut off valve

B.	Low-water cut-off valve

C.	Water level indicators

D.	automatic blowdown

QUESTION OF THE MONTH-SEP'14

Tue, 16 Sep 2014 11:08:50 +0100

1. How to detect air leakage in plant air network?

2. Heat-less dryer provides exact dew-point? support your answer.

3. VFD in BFP is a remedy for axillary power consumption ? How

4. What is the working of generator circuit breaker?

5. The relay "k-87" comes under which type of trip category? class A,B or C?

Note:- These question are meant for those who are working in power plant,freshers can try to solve these.

Best wishes from - PPIC Team

QUESTION OF THE MONTH - FEB 2014

Mon, 10 Feb 2014 12:27:37 +0100

1. Find the proper Cv for a valve that must allow 175 gal of propene per min with a specific gravity of 0.8 at max pressure of 55 Psi?

2. pressure in psi is measured and converted to a voltage by a sensor according to the relationship V=................?

3. How much will an aluminum rod of 10m at 20 deg expand when the temperature is changed from 0 to 100 deg centigrade?

4. what are the safety interlocks for stat-up vent control valve when plant suddenly blac-out?

5. A J-type thermocouple with a 0 C reference monitors a process temperature.Draw a flow chart for two alarm system tuning on one LED at 100 C and another at 200 C.

QUESTION OF THE MONTH - JAN 2014

Sun, 12 Jan 2014 12:59:17 +0100

1. HOW MANY MODE ARE IN UPS?

2. why we cant transmit the dc current easily ?

3. What is the Temperature Co-efficient of Resistance of PT- 1000 and PT-2000 ?

4. What is Burnout feature in a recorder?

5. How to derive IO Count (AI, AO, DI and DO ) from a Field instrument (FI) Bill of Quantities (BOQ) given by client?

6. How many types of open loop control system are there in thermal power plant?

7. what do u mean by 2/3 solenoid valves?

8. what is virtual instrumentation?

QUESTION OF THE MONTH - DEC 2013

Sat, 07 Dec 2013 12:48:43 +0100

1. What is the full form of KGV /IGV /IL / RPC / PRDS-PCV ?

2. What is the working principle of magnetic type flow meter ?

3. How you will detect the faultiness of a turbine flow metre ?

4. Make a logic for auto purging system of receiver moisture through a 1/2" gi pipe line.
instrument provided - 1 no of SOV - 2/3 Port , DCS cable , supply of 230v , Power cable - 3cx1.5 sqmm , air of 6kg/cm2
make the logic in ladder or FBD & send it to pp.ic@rediffmail.com

5. Tell of some safety instrumentation aspect & impact with respect of HIRA(Hazard identification & risk assessment) & send it to pp.ic@rediffmail.com

QUESTION OF THE FORTNIGHT (22th OCT - 05 th NOV ) FOR YOU

Tue, 22 Oct 2013 13:10:31 +0100

1.Which thermometers is not suitable for distant reading upto 60 metres?

2. How to adjust the sensitivity of a vibration probe in 3500/45 TSI system?

3. How to measure the eccentricity in axial shaft of rotor?

4. How many types of sensor probes are there for an TSI system ?

5. When a bare thermocouple is covered by a protective sheath, the response becomes.......?

6. Stalagmometer is used for the measurement of .....?

7. The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to.....?

a) d b) d2 c) d3 d) d4

8. A pyrheliometer is an instrument used for measuring the....?

9. what do you mean by electrical float for steam turbine ?

10. Zirconia probe is used for the measurement of ...............?

From next month you shall get more harder question..solve it & send it to above mail address--"TEST & PROVE ,YOU ARE THE BEST THEN OTHER IN THIS WORLD OF COMPETITION".

CONGRATULATION :- Debasish Paul , B.E ,App elex & inst engg , BUIE, has answered 7 questions( 29th sep - 15th oct) correctly...the team of PPIC congratulates him heartily for his great efforts.

QUESTION OF THE FORTNIGHT (29th SEP - 15th OCT ) FOR YOU

Sun, 29 Sep 2013 13:44:48 +0100

1.Which of the following is an undesirable dynamic characteristic of an instrument ?

A.	Reproducibility
B.	Dead zone
C.	Time lag
D.	Static error

2.The __________ of a vapor pressure thermometer is a functioning element.

A.	pointer
B.	bourdon tube
C.	bulb
D.	none of these

3.Working principle of radiation pyrometer is based on the

A.	Wien's law
B.	Kirchoffs law
C.	Stafan-Boltzman law
D.	Seebeck effect

In a single tank system, the transfer function of level to inlet flow rate is

A.	R/TS
B.	R/(TS + 1)
C.	l(TS + l)
D.	1/TS

5.he operation of a rotameter is based on

A.	variable flow area.
B.	rotation of a turbine.
C.	pressure drop across a nozzle.
D.	pressure at a stagnation point.

6.Thermal conductivity measurement com-prises the working principle of a

A.	CO₂ analyser
B.	polarimeter
C.	spectrometer
D.	chromatograph

7.Smoke density of the flue gas going out of the chimney is measured by a

A.	polarograph
B.	thermal conductivity meter
C.	photo electric cell
D.	chromatograph

The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.

A.	250	B.	500
C.	750	D.	1000

Which of the following measurements can be made by the measurement of emf ?

A.	pH value
B.	Degree of hydrolysis
C.	Composition of complex ions
D.	All (a), (b) & (c)

10.A magnetic flowmeter is

A.	based on the principle of Faraday's law.
B.	capable of measuring the flow rate of slurries and electrolytes.
C.	based on the linear relationship between the fluid flow rate and the induced voltage.
D.	all (a), (b) and (c).

From next month you shall get more harder question..solve it & send it to above mail address--"TEST & PROVE ,YOU ARE THE BEST THEN OTHER IN THIS WORLD OF COMPETITION".

CONGRATULATION :- Sunil Kumar , B.E ,Control System,has answered 10 questions( 16th sep - 29th sep) correctly...the team of PPIC congratulates him heartily for his great efforts.

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