Description : __________ is a handheld electro-optical pointing device. It is also called mouse pen. A. Joy Stick B. Light Pen C. Trackball D. Touch Screen
Last Answer : B. Light Pen
Description : A mouse device may be _____________ a) electro-chemical b) mechanical c) optical d) both mechanical and optical
Last Answer : d) both mechanical and optical
Description : Not an example for actuator (a) Optical fiber (b) Shape memory alloys (c) Magneto-strictive materials (d) Electro-/Magneto-rheological fluids
Last Answer : (a) Optical fiber
Description : Color test of water is done with an instrument called (A) Tintometer (B) Colorimeter (C) Electro-chemical cell (D) Turbidimeter
Last Answer : (A) Tintometer
Description : An electro pyrometer is an instrument used to measure?
Last Answer : high temperatures
Description : The instrument which can be used to measure optical activity, i.e., specific rotation:
Last Answer : The instrument which can be used to measure optical activity, i.e., specific rotation: A. Refractometer B. Photometer C. Voltmeter D. Polarimeter
Description : What is an endoscope? (1) It is an optical instrument used to see inside the alimentary canal (2) It is a device which is fitted on the chest of the patient to regularize the ... used for examining ear disorders (4) It is an instrument for recording electrical signals produced by human muscles
Last Answer : (1) It is an optical instrument used to see inside the alimentary canal Explanation: Endoscopymeans looking inside and typically refers to looking inside the body for medical reasons using ... : breathing disorders; chronic diarrhea; internal bleeding; irritable bowel syndrome; stomach ulcers, etc.
Description : Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains. ... ) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution
Last Answer : (3) optical fibre Explanation: An endoscope can consist of a rigid or flexible tube and a light delivery system to illuminate the organ or object under inspection. The light source is normally outside the ... in the case of rigid endoscopes or a bundle of fiber optics in the case of a fiberscope.
Description : Explain the difference between the angular magnification and resolving power of optical instrument. What limits the magnification of an optical instrument?
Last Answer : Angular magnification: The ratio of the angle subtended by the image as seen through the optical device to that subtended by the object at the un-aided eye Resolving Power: It is the ... object under examination. The magnification of an optical instrument is limited due to defects in lenses.
Description : The following instrument is used to set out a right angle (a) Cross staff (b) Optical staff (c) Prism square (d) None of the above (e) All the above*
Last Answer : e) All the above*
Description : Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains ... ) a narrow tube containing water (3) optical fibre (4) a narrow tube containing some chemical solution
Last Answer : optical fibre
Description : What is an endoscope ? (1) It is an optical instrument used to see inside the alimentary canal (2) It is a device which is fitted on the chest of the patient to regularise the ... used for examining ear disorders (4) It is an instrument for recording electrical signals produced by human muscles
Last Answer : It is an optical instrument used to see inside the alimentary canal
Description : Are lip studs (and other body jewelry) electro-conductive?
Last Answer : Normally, studs and the like are of silver or gold which are excellent electrical conductors.
Description : How does Electro Convulsive Therapy (ECT in case I phrased that wrong) work?
Last Answer : When in the Psych Ward, I heard from most of the patients who got it that it was like hitting control alt delete for the brain. Just a nice little, and much needed, restart.
Description : Is there a test to prove that an EMF (electro-magnetic field) has damaged human body?
Last Answer : So you believe that EMF radiation does physiologic damage to the human body? If so, what makes you think this?
Description : What is some good software for producing electronic ambient/trance/electro-pop music on a home PC?
Last Answer : I dunno about open source but why would you need the code to make music? Fruity loops is good tho if you run windows. On mac logic is my first choice
Description : 5. Who built the first working, programmable, electro mechanical computer? -Discoveries and Inventions
Last Answer : Explanation: Konrad Zuse built the world's first program-controlled computer.
Description : Who in 1786 invented the gold leaf electro scope?
Last Answer : Answer: Abraham Bennet.
Description : What do you mean by Electro cardiograph?
Last Answer : Electrocardiograph is recording of heart's electrical activity over a period of time.The graph shows the rate and rythm.This one is primary clinical tool to perform electrical and mechanical function of heart.
Description : Statement-1: Zn displaces Ag from the complex `Na[Ag(CN)_(2)]` to give `Na_(2)[Zn(CN)_(4)]` Statement-2:Zn is more electro positive than silver
Last Answer : Statement-1: Zn displaces Ag from the complex `Na[Ag(CN)_(2)]` to give `Na_(2)[Zn(CN)_(4) ... false D. Statement-1 is false but Statement -2 is true
Description : Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. Coke powder is spreadded over the molten electro
Last Answer : Electrolytic reduction of `Al_(2)O_(3)`. Electrolyte (`Al_(2)O_(3)+"cryolite")` Anode: Graphite rods. ... of molten aluminium by air D. (a) both (b)
Description : Which of the following is not electro-mechanical computer? A) Z3 B) ABC C) mark I D) ENIAC
Last Answer : Answer : D
Description : Computers built before the First Generation of computers were: A) Mechanical B) Electro-mechanical C) Electrical D) None of these
Last Answer : Answer : B
Description : Which of the following have low failure rate? A) mechanical devices B) electronic devices C) electro-mechanical devices D) None of above
Description : Which technology is used in Compact disks? A) Mechanical B) Electrical C) Electro Magnetic D) Laser
Description : Why ABC is considered electro-mechanical computer? A) Because it was invented before electronic computers were developed B) Because there are wheels, drums, bars to rotate and move to produce result C) Because they use the flow of electrons in different component D) None of above
Description : Which technology is more reliable? A) Mechanical B) Electro-Mechanical C) Electronic D) For reliability it does not matter. So all of above are reliable
Last Answer : Answer : C
Description : Which of the following is not electro-mechanical computer? A) Mark I B) ABC C) Zuse D) UNIVAC
Description : When was the first electro-mechanical computer developed? A) 1880 B) 1990 C) 1944 D) None of above
Description : Electro magnetic radiation is emitted by (a) X-ray (b) Electrons (c) Ultrasonic (d) Protons
Last Answer : Ans:(b)
Description : When a vehicle passes, TV reception gets distorted. This is because – (1) metal reflects radiowaves (2) spark plug creates electromagnetic disturbances (3) vehicle pollution affects the performance of the TV components (4) modern vehicles use electro ignition system
Last Answer : (2) spark plug creates electromagnetic disturbances Explanation: This is caused due to the interference caused by the electromagnetic waves generated by a passing vehicle. These waves were within the same ... in which two waves superimpose to form a resultant wave of greater or lower amplitude.
Description : In electro-refining, the pure metal is deposited on – (1) vessel (2) electrolyte (3) cathode (4) anode
Last Answer : (3) cathode Explanation: In electro-refining, the anodes consist of unrefined impure metal, and as the current passes through the acidic electrolyte the anodes are corroded into the solution so ... pure metal onto the cathodes. Electrolytic refining is used to extract impurities from crude metals.
Description : The high reactivity of fluorine is due to (1) small size of fluorine atom (2) its high electro negativity (3) availability of d-orbitals (4) strong F - F bond
Last Answer : (2) its high electro negativity Explanation: The high reactivity of fluorine is due to its high electro negativity.
Description : Electro-static precipitator is used to control – (1) Chemical Pollutants (2) Radio-active Pollutants (3) Water Pollutants (4) Air Pollutants
Last Answer : (4) Air Pollutants Explanation: An Electrostatic precipitator is a particulate collection device that removes particles from a flowing gas (such as air) using the force of an induced electrostatic charge. ... and can easily remove fine particulate matter such as dust and smoke from the air stream.
Description : A current carrying conductor is associated with – (1) a magnetic field (2) an electric field (3) an electro-magnetic field (4) an electrostatic field
Last Answer : (3) an electro-magnetic field Explanation: A current carrying conductor, such as a metal wire, will produce a magnetic field around it because of the motion of charge within the wire itself. This motion produces or sets up a magnetic field around the wire in the form of concentric circles.
Description : Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electro negativity (3) Low ionization energy (4) Malleability
Last Answer : (1) Tendency to gain electrons Explanation: The transition metals have a tendency to lose electrons. Since the electrons in the highest energy level are actually on a lower principal energy number than the ... makes it relatively easy to lose some or all of their electrons to land in stable state.
Description : What are different types of principles of operation of electro-mechanical relays?
Last Answer : Answer: Electro-mechanical relays operate by two principles. Electro-magnetic attraction and electromagnetic induction. In electromagnetic attraction relay plunger is drawn to the solenoid or an ... operation is similar to induction motor. Torque is developed by electromagnetic induction principle
Description : Electro negative elements means:?
Last Answer : An atom that gains one or more electrons
Description : Electro positive elements means:?
Last Answer : An atom that loses one or more electrons
Description : During electro refining, Pure Metal is collected at
Last Answer : Cathode
Description : What is meant by electro negativity of SF6 gas?
Last Answer : SF6 has high affinity for electrons. When a free electron comes and collides with a neutral gas molecule, the electron is absorbed by the neutral gas molecule and negative ion is formed. This is called as electro negativity of SF6 gas.
Description : The element having highest reactivity or electro-negativity?
Last Answer : Fluorine
Description : The elements which have least electro negativity?
Last Answer : Francium; Caesium
Description : The element which has most electro neg- ativity?
Description : Electro negativity scale was invented by?
Last Answer : Linus Pauling
Description : Electro negativity was discovered by?
Description : The most electro positive stable element?
Last Answer : Cesium
Description : The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the (A) Venturi atomiser (B) Gravity settling chamber (C) Electro-static precipitator (D) Cyclone separator
Last Answer : (C) Electro-static precipitator
Description : Tin coating is not done by (A) Vaporising (B) Hot dipping (C) Electro deposition (D) Spraying
Last Answer : (A) Vaporising