Related Questions

For a given design of bubble cap, the number of bubble caps to be used per tray is set by the
A Allowable gas velocity through the slots
B Plate spacing
C Diameter of the column
D All of the above
STP-তে একটি আদর্শ গ্যাসকে প্রথমে তার প্রাথমিক আয়তনের এক-তৃতীয়াংশে সংকুচিত করা হয়, এবং তারপর প্রসারিত হতে দেওয়া হয় যতক্ষণ না তার চাপ প্রাথমিক চাপের অর্ধেক হয়। উভয় প্রক্রিয়ায় গ্যাসের তাপমাত্রা স্থির থাকে। যদি গ্যাসের প্রাথমিক অভ্যন্তরীণ শক্তি । হয়ে থাকে তাহলে এর চূড়ান্ত অভ্যন্তরীণ শক্তি কত? (An ideal gas at STP is first compressed to one-third of its initial volume and then allowed to expand until its pressure is half the initial pressure. The temperature of the gas remains constant during both the processes. If the initial internal energy of the gas is U, what is its final internal energy?)
A U/3
B U/2
C U
D 2U/3
Gantt chart (or Bar chart) is helpful in
A Efficient utilisation of manpower and machines
B Preparing production schedule
C Efficient despatching of products
D Inventory control
Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.
A Molal
B Relative
C Percentage
D None of these
__________ chart is known as transient heat conduction chart.
A Dirhing's
B Heisler's
C Mollier's
D Cox
Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.
A Less
B More
C Same
D Either A or B; no generalisation can be made
Even though bubble cap towers are very effective for humidification operation, they are not used commonly in industries, because of the
A High evaporation losses of water
B High pressure drop of the gas
C Difficulty in its fabrication
D None of these
__________ is the determining factor for the number of bubble caps to be used per tray.
A Permissible slot velocity
B Tray diameter
C Liquid load
D Vapor load
What type of magnetic material is normally used in bubble memories?
A Magnetic core
B Cobalt
C Garnet
D Metallic
E None of the above
Bubble cap tray is the most commonly used tray in large distillation column, because
A Of its flexibility and nearly constant efficiency under varying conditions of operation
B It incurs less pressure drop as compared to any other try designed for the same duty
C It eliminates the foaming and entrain-ment tendency during operation
D None of these

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