The force required to move the pointer in an indicating instruments is deflecting force
Last Answer : The pointer of an indicating instrument should be very light.
Description : What is the force acting on the pointer of an indicating instrument when it is in motion?
Last Answer : controlling, damping and deflecting torques
Description : A moving system force in analog instruments which ensures that the deflection of the pointer for a given value of measured quantity always has the same value
Last Answer : controlling force
Description : What is the primary disadvantage of the pointer arrangement for indicating coil rotation?
Last Answer : Coil balance.
Description : A good choice of shunt resistance will place the indicating pointer near what part of the meter scale with a normal load?
Last Answer : Midscale.
Description : When both deflecting and controlling torque act, the pointer of an indicating instrument comes to
Last Answer : rest
Description : If the pointer of an indicating instrument is in motion, then what opposes deflecting torque?
Last Answer : damping and controlling torque
Description : The pointer of an indicating instrument is generally made of
Last Answer : aluminum
Description : Electrostatic forces in high voltage circuits cause indicating instruments to give ____________. A. parallax readings B. highly intuitive readings C. highly accurate readings D. inaccurate readings
Last Answer : Answer: D
Description : Give three operating forces acting on indicating instruments.
Last Answer : a. Deflecting force. b. Controlling force. c. Damping force.
Last Answer : For the indicating instrument the preferred damping condition is a damping coefficient of 0.8 to 1.
Last Answer : A moving coil instrument is used as an ohmmeter. The indicating scale of the meter will be Hyperbolic.
Last Answer : The damping torque must operate only when the moving system of the indicating instrument is: Actually moving
Last Answer : In about middle of the scale
Description : When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is ?
Last Answer : When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is all right.
Description : Times in your life when you've liked someone, did you make the first move as far as indicating that you liked them, or did you wait for them to show you that they liked you before you did anything?
Last Answer : Hmm, it was a bit of both (female here). It completely depended upon the person and the situation.
Description : Which of the following instruments can be used for measurement of very high value resistances such as insulation resistance in industries? A) Wheatstone bridge B) Megger C) Ohm-meter D) Resistive potentiometer
Last Answer : Which of the following instruments can be used for measurement of very high value resistances such as insulation resistance in industries? A) Wheatstone bridge B) Megger C) Ohm-meter D) Resistive potentiometer
Description : Highest flux density exists inside which of the following instruments? A) Electrodynamic instruments B) Hot wire instruments C) Moving iron instruments D) Moving coil instruments
Last Answer : Highest flux density exists inside which of the following instruments? A) Electrodynamic instruments B) Hot wire instruments C) Moving iron instruments D) Moving coil instruments
Description : The type of instruments used mainly for standardizing instruments in laboratories is (a) Indicating instrument (b) Integrating instrument (c) Absolute instrument (d) Recording instrument
Last Answer : Ans:Option C
Description : Eddy current damping is normally used in the instruments of (a) Induction type (b) Moving iron type (c) Permanent magnet moving coil type (d) Nothing can be said
Last Answer : Permanent magnetic moving coil instrument.
Description : Electrostatic type instruments are primarily used as
Last Answer : Voltmeter
Description : Horizontally mounted moving iron instruments use (a) Eddy current damping (b) Electromagnetic damping (c) Fluid friction damping (d) Air friction damping
Last Answer : Horizontally mounted moving iron instruments use Air friction damping
Description : Permanent magnet moving coil instruments are used for
Last Answer : PMME are mostly used for measuring voltage and current.
Last Answer : Thermocouple instruments are also known as Rectifier instruments.
Last Answer : PMMC type instruments normally use Eddy current damping.
Last Answer : Electrostatic instruments are normally used for High voltage measurements.
Description : Which of the following instruments can be used to measure AC current only? (a) Permanent Magnet Type ammeter(b) Induction type ammeter (c) Moving iron voltmeter(d) Moving iron ammeter
Last Answer : (b) Induction type ammeter
Last Answer : Jewels are used in instruments for the purpose of Bearing.
Last Answer : The thermocouple instruments do not have High degree of measuring accuracy.
Last Answer : In the case of PMMC rectifier type instruments, the deflecting torque is proportional to Average value of AC current.
Last Answer : The electrostatic instruments can be used without serious loss of accuracy upto 100kHz frequency.
Last Answer : Integrating instruments are those which measure the total quantity of electricity delivered in a particular time.
Description : The use of _____ instruments is merely confined within laboratories as standardising instruments.
Last Answer : The use of absolute instruments is merely confined within laboratories as standardizing instruments.
Last Answer : Air friction damping is used in the instruments which is: Moving iron
Last Answer : Moving iron and PMMC instruments can be distinguished from each other by looking at: Scale
Last Answer : Commonly used instruments in power system measurement are induction.
Last Answer : Operating torques in analogue instruments are deflecting, control and damping.
Last Answer : The power factor of a single phase load can be calculated if the instruments available are three ammeters or three voltmeters.
Last Answer : The switch board instruments should be mounted in vertical position.
Last Answer : In the majority of instruments, damping is provided by eddy currents.
Last Answer : According to application, instruments are classified as switch board, portable.
Description : What do you mean by secondary instruments?
Last Answer : The instruments which will give the direct readings are called secondary instruments
Description : Which of the following statements of Coast Guard Regulations (46 CFR) concerning battery installations is correct? A. Sign, permanently secured to the battery trays, indicating that 'naked lights or smoking is ... on the bottom. D. Power and lighting batteries must be of the lead-acid type only.
Last Answer : Answer: C
Description : Which of the following statements represents the action of a megohmmeter when testing a small capacitor in good condition? A. The meter pointer should immediately swing to the maximum resistance value ... . D. The meter pointer should immediately swing to a high reading and gradually decrease.
Last Answer : Answer: B
Description : Which of the listed statements is correct when using an analog multimeter as an ohmmeter? A. The pointer should be adjusted to zero each time a new resistance range is selected. B. The ... C. Ohmmeters are not sufficiently sized to measure conductor insulation resistance. D. All of the above.
Description : A capacitor can be tested using a megohmmeter or an ohmmeter. If the meter is connected to a shorted capacitor, the meter pointer should _____________. A. immediately swing to the maximum resistance ... deflect to and remain at zero D. immediately swing to a high reading and then gradually decrease
Description : One joule is the energy required to (A) Raise the temperature of 1 gm of water by 1°C (B) Raise the temperature of 1 kg of water by 1°C (C) Move a mass of 1 gm by 1 cm distance by a force of 1 Newton (D) Move a mass of 1 kg by 1 m distance by a force of 1 Newton
Last Answer : Answer : D