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- Question
The second order system with the transfer function
has a damping ratio of
Options- A. 2.0
- B. 0.5
- C. 1.0
- D. 4.0
- Correct Answer
- 0.5
- 1. Bubble cap tray is the most commonly used tray in large distillation column, because
Options- 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. Discuss
- 2. Accumulated sum at the end of 5 years, if Rs. 10000 is invested now at 10% interest per annum on a compound basis is Rs.
Options- A. 15000
- B. 16105
- C. 18105
- D. 12500 Discuss
- 3. Constantan is an alloy of
Options- A. Cu (55%) & Sn (45%).
- B. Cu (55%) & Ni (45%).
- C. Pt (95%) & Rh (10%).
- D. Fe (80%) & Ni (20%). Discuss
- 4. For efficient grinding, ball mills must be operated
Options- A. at a speed less than the critical speed.
- B. at a speed more than the critical speed.
- C. at a speed equal to the critical speed.
- D. with minimum possible small balls. Discuss
- 5. In screen analysis, the notation +5 mm/-10 mm means particles passing through
Options- A. 10 mm screen and retained on 5 mm screen.
- B. 5 mm screen and retained on 10 mm screen.
- C. both 5 mm and 10 mm screens.
- D. neither 5 mm nor 10 mm screen. Discuss
- 6. The fractional volume change of the system for the isothermal gas phase reaction, A → 3B , between no conversion and complete conversion is
Options- A. 0.5
- B. 1
- C. 2
- D. 3 Discuss
- 7. A first order irreversible reaction, A → B is carried out separately in a constant volume as well as in a variable volume reactor for a particular period. It signifies that __________ in the two reactors.
Options- A. both conversion as well as concentration are same
- B. conversion in both will be the same but concentrations will be different
- C. both the conversion as well as concentrations will be different
- D. none of these. Discuss
- 8. Which of the following is not a product of tar distillation?
Options- A. Phenol & naphthalene
- B. Benzol & pitch
- C. Anthracene & creosote
- D. None of these Discuss
- 9. __________ plant emits large amount of SO2 as an air pollutant.
Options- A. Nitric acid
- B. Sulphuric acid
- C. Chloralkali
- D. Iron & steel Discuss
- 10. During agitation of liquids, power consumption during laminar flow is not proportional to the
Options- A. density of the liquid
- B. viscosity of the liquid
- C. cube of impeller diameters
- D. square of rotational speed. Discuss
More questions
Correct Answer: of its flexibility and nearly constant efficiency under varying conditions of operation.
Correct Answer: 16105
Correct Answer: Cu (55%) & Ni (45%).
Correct Answer: at a speed less than the critical speed.
Correct Answer: 10 mm screen and retained on 5 mm screen.
Correct Answer: 2
Correct Answer: conversion in both will be the same but concentrations will be different
Correct Answer: None of these
Correct Answer: Sulphuric acid
Correct Answer: density of the liquid
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