Steam Boilers, Engines, Nozzles & Turbines Mcqs - Set 3

1)   Water tube boilers are those in which________________?

a. flue gases pass through tubes and water around it
b. water passes through the tubes and flue gases around it
c. work is done during adiabatic expansion
d. change in enthalpy
e. none of the above
Answer  Explanation 

ANSWER: work is done during adiabatic expansion

Explanation:
No explanation is available for this question!


2)   Lancashire boiler is of____________________?

a. stationary b. horizontal type
c. natural cirulation type
d. internally fired type
e. all of the above
Answer  Explanation 

ANSWER: all of the above

Explanation:
No explanation is available for this question!


3)   Which of the following substance will have same percentage in both proximate and ultimate analysis___________________?

a. ash
b. volatile matter
c. moisture
d. hydrogen
e. none of the above
Answer  Explanation 

ANSWER: ash

Explanation:
No explanation is available for this question!


4)   Which of the following is a fire tube boiler________________?

a. locomotive boiler
b. Babcock and Wilcox boiler
c. Stirling boiler
d. all of the above
e. none of the above
Answer  Explanation 

ANSWER: locomotive boiler

Explanation:
No explanation is available for this question!


5)   The diameter of cylindrical shell of the Lancashire boiler is of the order of__________________?

a. 1 tp 1.25m
b. 1 to 1.75 m
c. 2 to 4 m
d. 1.75 to 2.75 m
e. 2.25 to 4.5 m
Answer  Explanation 

ANSWER: 1.75 to 2.75 m

Explanation:
No explanation is available for this question!


6)   The biggest size of thermal power unit operating in India is ________________?

a. 30 MW
b. 60 MW
c. 100 MW
d. 210 MW
e. 500 MW
Answer  Explanation 

ANSWER: 500 MW

Explanation:
No explanation is available for this question!


7)   The high pressure boiler is oiie producing steam at a pressure more than_________________?

a. atmospheric pressure
b. 5 kg/cm2
c. 10 kg/cm2
d. 40 kg/cm2
e. 75-80 kg/cm2
Answer  Explanation 

ANSWER: 75-80 kg/cm2

Explanation:
No explanation is available for this question!


8)   Which of the following is steam dbal?

a. non-coking bituminous coal
b. brown coal
c. pulverised coal
d. coking bituminous coal
e. none of the above
Answer  Explanation 

ANSWER: non-coking bituminous coal

Explanation:
No explanation is available for this question!


9)   The diameter of internal flue tubes in a Lancashire boiler compared to its shell is_________________?

a. one-half
b. one-third
c. one-fourth
d. one-fifth
e. two-fifth
Answer  Explanation 

ANSWER: two-fifth

Explanation:
No explanation is available for this question!


10)   Duplex feed pumps are used in small steam boilers. These operate on the principle of_________________?

a. centrifugal pump
b. axial flow pump
c. gear pump
d. ejector pump
e. reciprocating pump
Answer  Explanation 

ANSWER: reciprocating pump

Explanation:
No explanation is available for this question!


11)   In natural circulation type boiler _______________?

a. heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum
b. water is supplied in durm and through down-comers located in atmospheric conditon it passes to the water wall and rises to drum in the form of mixture
c. feed pump is employed to supplement natural circulation in water wall type furnace
d. water is converted into steam in one . pass without any recirculation
e. water is fed at atmospheric pressure
Answer  Explanation 

ANSWER: heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum

Explanation:
No explanation is available for this question!


12)   In locomotive boiler, maximum steam pressure is limited to_______________?

a. 1 kg/cm2
b. 5 kg/cm2
c. 10 kg/cm2
d. 18 kg/cm2
e. 31 kg/cm2
Answer  Explanation 

ANSWER: 18 kg/cm2

Explanation:
No explanation is available for this question!


13)   The shell diameter and length of locomotive boiler are_______________?

a. 1.5 m, 4 m
b. 1.5 m, 6 m
c. 1 m, 4 m
d. 2 m, 4 m
e. 1.5 m, 8 m
Answer  Explanation 

ANSWER: 1.5 m, 4 m

Explanation:
No explanation is available for this question!


14)   Which of the following boilers is best suited to meet fluctuating demands___________________?

a. babcock and wilcox
b. locomotive
c. lancashire
d. cochran
e. comish
Answer  Explanation 

ANSWER: locomotive

Explanation:
No explanation is available for this question!


15)   A boiler in India should conform to safety regulations of__________________?

a. DIN
b. BS
c. ASTM
d. IBR
e. GOST
Answer  Explanation 

ANSWER: IBR

Explanation:
No explanation is available for this question!


16)   Which of the following varieties of coals is mostly used in steam boilers____________________?

a. non-coking bituminous coal
b. brown coal
c. peat
d. coking bituminous coal
e. none of the above
Answer  Explanation 

ANSWER: none of the above

Explanation:
No explanation is available for this question!


17)   Locomotive boiler is of the following type__________________?

a. multitubular
b. horizontal
c. internally fired
d. mobile
e. all of the above
Answer  Explanation 

ANSWER: all of the above

Explanation:
No explanation is available for this question!


18)   Hard coke is used in________________?

a. cement industry
b. thermal power plant
c. blast furnace
d. domestic use
e. locomotives
Answer  Explanation 

ANSWER: blast furnace

Explanation:
No explanation is available for this question!


19)   Hard coke is produced by carborisation of coal at_______________?

a. atmospheric temperature
b. 500-600°C
c. 70O-850°C
d. 95O-1100°C
e. 120O-1500°C
Answer  Explanation 

ANSWER: 95O-1100°C

Explanation:
No explanation is available for this question!


20)   Pick up the correct statement as regards Cornish boiler and Lancashire boiler _______________?

a. cornish is fire tube and lancashire is water tube
b. cornish is water tube and lancashire is fire tube
c. cornish has two fire tubes and lancashire has one
d. lancashire has two fire tubes and cornish has one
e. both have two fire tubes
Answer  Explanation 

ANSWER: lancashire has two fire tubes and cornish has one

Explanation:
No explanation is available for this question!