Related Questions

A tank contains 10,000 gallons of a solution that is 5 percent sodium chloride by volume. If 2500 gallons of water evaporate from the tank, the remaining solution will be approximately what percent sodium chloride?
A 1.25%
B 3.75%
C 6.25%
D 6.67%
The value of Sodium Absorption Ratio for high sodium water lies between
A 0 to 10
B 10 to 18
C 18 to 26
D 26 to 34
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
A Carbonate
B Phosphate
C Bicarbonate
D Silicate
Which of the following statement(s) is/are INCORRECT regarding Phosphorus?
A Phosphorus reacts vigorously with water
B It is a non-metal
C It catches fire on reacting with air
D It is found in group 15 of the modern periodic table
Which of the following statement regarding waveguides is incorrect?
A At waveguide can be coupled to a coaxial cable
B At frequencies below the cut off value the wave progresses across the waveguide after total reflections
C Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves
D Waveguides can handle large power at UHF and microwaves
Which one of the following statement is incorrect regarding the electromagnetic radiation?
A These are produced by the motion of electric charge
B The oscillation of charged particles sets up changing electric fields
C The changing electric fields induce the changing magnetic fields in the surrounding medium
D None of these
Which of the following statement is incorrect regarding ecological pyramids
A The pyramid of energy is inverted in ocean ecosystem
B The pyramid of biomass is inverted in aquatic ecosystem
C The pyramid of numbers is upright in grass land ecosystem
D The pyramid of biomass is upright in grass land ecosystem
Which of the following statements regarding two value capacitor motor is incorrect ?
A It is a reversing motor
B It is preferred to permanent-split single-value capacitor motor where frequent reversals are required
C It has low starting as well as rushing currents
D It has high starting torque
Which of the following statements regarding reluctance-start motor is incorrect ?
A It is similar to reluctance motor
B It is basically an induction motor and not a synchronous one
C So far as its basic working principle is concerned, it is similar to shaded pole motor
D the air-gap between rotor and salient poles is non- uniform
Which of the following statements regarding a reluctance motor is incorrect ?
A It cannot be reversed, ordinarily
B It requires no D.C. field excitation for its operation
C It is nothing else but a single-phase, salient pole synchronous-induction motor
D Its squirrel cage-rotor is of unsym-metrical magnetic construction in order to vary reluc-tance path between stator and rotor

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