Description : . For gasoline, the flash point (
Last Answer : (D) None of these
Description : Flash point of diesel/kerosene (>50°C) is determined by the (A) Abel apparatus (B) Pensky-Martens apparatus (C) Saybolt chromometer (D) None of these
Last Answer : (A) Abel apparatus
Description : Flash point of an oil is determined by the (A) Pensky Martens apparatus (B) Ramsbottom apparatus (C) Saybolt viscometer (D) Conradson apparatus
Last Answer : (A) Pensky Martens apparatus
Description : Flash point of atmospheric distillation residue is determined by __________ apparatus. (A) Pensky-Martens (closed cup type) (B) Abel (C) Cleveland (open cup type) (D) None of these
Last Answer : (C) Cleveland (open cup type)
Description : Colour comparator is used to measure the (A) pH value (B) Electrode potential (C) Colour intensity (D) None of these
Last Answer : Option A
Description : What is the difference between centromere and chromometer ?
Last Answer : Centromere 1. Undigested space is special in the colored chromosome. 2. Seen on all chromosomes. 3. Here the RNA is slightly coiled. 4. Each chromosome usually contains one. 5. Centromeres usually do ... more coiled. 4. Each chromosome contains a lot. 5. Each chromosome contains one or more genes.
Description : Orsat apparatus (A) Gives flue gas analysis on dry basis (B) Determines N2 in flue gas indirectly (C) Can’t determine CO in flue gas, if it is < 0.2% (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : BET apparatus is used to determine the (A) Specific surface of a porous catalyst (B) Pore size distribution (C) Pore diameter (D) Porosity of the catalyst bed
Last Answer : (A) Specific surface of a porous catalyst
Description : What are the apparatus used to determine volumetric composition of water?
Last Answer : The apparatus used in laboratory to determine the volumetric composition of water is called Hofmann Voltameter.A Hofmann voltameter is an apparatus for electrolysing water, invented by August Wilhelm von Hofmann in 1866. It consists of three joined upright cylinders, usually glass.
Description : What are th apparatus used to determine volumetric composition of water?
Last Answer : Feel Free to Answer
Description : Le Chatelier apparatus is used to determine which of the following properties for cement A) Soundness* b) Initial setting time c) Compressive strength d) Tensile strength
Last Answer : A) Soundness*
Description : What is the colour of crude petroleum?
Last Answer : Brown
Description : Doctor's solution used for sweetening of petroleum products is (A) Sodium plumbite (B) Sodium sulphite (C) Sodium thiosulphate (D) Lead sulphate
Last Answer : (A) Sodium plumbite
Description : Sulphuric acid treatment of petroleum products removes the __________ materials. (A) Gum forming (B) Color forming (C) Asphaltic (D) All (A), (B) & (C)
Description : Which of the following is used as a solvent in deasphalting of petroleum products? (A) Furfural (B) Propane (C) Methyl ethyl ketone (D) Liquid sulphur dioxide
Last Answer : (B) Propane
Description : With increase in density, the viscosity of petroleum products (A) Increases (B) Decreases (C) Remain same (D) Either (A) or (B)
Last Answer : (A) Increases
Description : Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of __________ kcal/kg. (A) 600-750 (B) 250-350 (C) 1000-1500 (D) 2000-2500
Last Answer : (A) 600-750
Description : In Hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen (A) Enhances the desulphurisation process (B) Minimises coke formation (C) Both (A) and (B) (D) Neither (A) nor (B
Last Answer : (C) Both (A) and (B)
Description : Clay treatment of petroleum products (A) Decolorizes & stabilises cracked gasoline (B) Desulphurise straight run gasoline & kerosene (C) Adsorb arsenic from feedstock to catalytic reforming (D) All (A), (B) & (C)
Description : Waxes present in petroleum products (A) Can be separated out by distillation (B) Are not soluble in them (C) Crystallise out at low temperature (D) Decrease their viscosity
Last Answer : (C) Crystallise out at low temperature
Description : Sulphur content in lighter and heavier petroleum products is generally determined respectively by (A) Lamp method and bomb method (B) Bomb method and lamp method (C) Bomb method and quartz tube method (D) Quartz tube method and lamp method
Last Answer : (B) Bomb method and lamp method
Description : Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint. (A) Black (B) White (C) Red (D) Yellow
Last Answer : (B) White
Description : Pick out the wrong statement. (A) Higher specific gravity of petroleum products means higher C/H ratio (B) Aromatics have lower specific gravity than corresponding paraffins (C) Hydrocarbons of low ... of high specific gravity (e.g., aromatics) possess the maximum thermal energy per unit weight
Last Answer : (B) Aromatics have lower specific gravity than corresponding paraffins
Description : In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of products including gas oil, diesel oil and ... the fraction (A) Heavy distillates (B) Intermediate distillates (C) Light ends (D) Residues
Last Answer : (A) Heavy distillates
Description : Which of the following petroleum products contain minimum sulphur? (A) Naphtha (B) Kerosene (C) LSHS (D) Furnace oil
Last Answer : (A) Naphtha
Description : Increase in the specific gravity of petroleum products indicates (A) Decrease in paraffin content (B) Increase in thermal energy per unit weight
Last Answer : (A) Decrease in paraffin content
Description : Pick out the wrong statement. (A) A pale color of petroleum product indicates lower viscosity (B) Color of petroleum products indicates the degree of refinement (C) Lighter petroleum distillates are ... in color than the heavier residual oils (D) Fluorescence of oils helps to detect its adulteration
Last Answer : (A) A pale color of petroleum product indicates lower viscosity
Description : Solvent used for dewaxing of petroleum products are (A) Furfural (B) Methyl ethyl ketone (MEK) (C) Propane (D) Both (B) & (C
Last Answer : (C) Propane
Description : With increase in the number of carbon and hydrogen atoms in hydrocarbon molecules, the density of petroleum products (A) Decreases (B) Increases (C) Remain same (D) Unpredictable from the data
Last Answer : (B) Increases
Description : What happens to a comparator when both inputs are equal?
Last Answer : What you're talking about here is an op-amp configured in open loop mode - no feedback resistor, so the output swings + or -, generally in opposition to the higher value on the inputs. ... are completely equal, because of thermal variations, quantum effect, and other non-ideal aspects of a circuit.
Description : What is a comparator ?
Last Answer : A comparator is a type of circuit that compares signal or voltage levels.
Description : In a series wound motor, the current passing through the field windings is also passing through the _____________. A. armature B. shunt field C. reactance comparator D. laminations
Last Answer : Answer: A
Description : Essentially a satellite ___________ is a radio repeater in the sky A. transponder B. comparator C. duplexer D. billboard
Last Answer : A. transponder
Description : What do you mean by comparator
Last Answer : A comparator is a special combinational circuit designed primarily to compare the relative magnitude of two binary numbers.
Description : What are the characteristics of a comparator?
Last Answer : 1.Speed of operation 2.Accuracy 3.Compatibility of the output
Description : What are the applications of comparator?
Last Answer : 1.Zero crossing detector 2.Window detector 3.Time marker generator 4.Phase detector
Description : What is a comparator?
Last Answer : A comparator is a circuit which compares a signal voltage applied at one input of an opamp with a known reference voltage at the other input. It is an open loop op - amp with output + Vsat .
Description : Differentiate Schmitt trigger and comparator.
Last Answer : comparator. 1. It compares the input signal with references voltage then yields the output voltage 2. It need not consist of feedback 3. comparator output need not to besquare wave Schmitt ... reference points namely UTP<P. 2. It employs positive feedback 3. Its output is square wave.
Description : Which of the following circuit is used as a 'Memory device' in computers? 1) Rectifier 2) Flip-Flop 3) Comparator 4) Attenuator
Last Answer : 2) Flip-Flop
Description : A controller essentially is a A. Sensor B. Clipper C. Comparator D. Amplifier
Last Answer : C. Comparator
Description : What are the functions of a converter-comparator group?
Last Answer : The comparator compares the signal strengths from the receivers and the converter converts the frequency-shift rf signal into a tty set dc loop control signal.
Description : What does a lighted LED indicate on a logic comparator?
Last Answer : A difference in logic states between the reference IC and the IC under test.
Description : Design and explain a comparator to compare two identical
Last Answer : words. • Two numbers represented by A = A3A2A1A0 & B = B3B2B1B0 • If two numbers equal P = Ai Bi • Obtain the logic Expression. • Obtain the logic diagram.
Description : What do you mean by comparator?
Description : The conversation speed of an analog to digital converter is maximum with the following technique. (A) Dual slope AD converter. (B) Serial comparator AD converter. (C) Successive approximation AD converter. (D) Parallel comparator AD converter.
Last Answer : (D) Parallel comparator AD converter.
Description : Which of the following circuit is used as 'Memory device' in computers ? (1) Rectifier (2) Flip-Flop (3) Comparator (4) Attenuator
Last Answer : Flip-Flop
Description : Describe block diagram of digital comparator and write truth table of 2 bit comparator.
Last Answer : Digital comparator is a combinational circuit which compares two numbers, A and B; and evaluates their relative magnitudes. The outcome of the comparison is given by three binary variables which indicate whether A ... Depending on the result of comparison one of these outputs will go high.
Description : State any two application of each of following i) Comparator ii) Zero Crossing Comparator
Last Answer : Application of Comparator: 1. Null detectors: A null detector is one that functions to identify when a given value is zero. Comparators can be a type of amplifier distinctively for null comparison ... detector controls the switching so that it occurs at close to zero voltage of the cycle.
Description : In a control system, the comparator measures the difference between (a) output and input (b) output of controller and system (c) actual and desired performance (d) input and error signal
Last Answer : B