In order to increase the sensitivity of a moving coil galvanometer, one should decrease

In order to increase the sensitivity of a moving coil galvanometer, one should decrease
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In order to increase the sensitivity of a moving coil galvanometer, one should decrease A. the strength of ... in its coil D. the area of its coil
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A moving coil galvanometer has 150 equal divisions. Its current sensitivity is 10-divisions per milliampere and voltage sensitivity is 2 divisions per

Description : A moving coil galvanometer has 150 equal divisions. Its current sensitivity is 10-divisions per milliampere and voltage sensitivity is 2 divisions per

Last Answer : A moving coil galvanometer has 150 equal divisions. Its current sensitivity is 10-divisions per milliampere and voltage ... `10^(3)` D. `10^(5)`

The pole faces of U-shaped magnet in a moving coil galvanometer are made concave to a) decrease the strength of magnetic field b) create a non-uniform magnetic field c) make the magnetic field radial d) All of these

Description : The pole faces of U-shaped magnet in a moving coil galvanometer are made concave to a) decrease the strength of magnetic field b) create a non-uniform magnetic field c) make the magnetic field radial d) All of these

Last Answer : c) make the magnetic field radial

Assertion current sensitivity of a galvanometer is directley proportionall to the current through the coil. Reason Voltage sensitivity is inversely pr

Description : Assertion current sensitivity of a galvanometer is directley proportionall to the current through the coil. Reason Voltage sensitivity is inversely pr

Last Answer : Assertion current sensitivity of a galvanometer is directley proportionall to the current ... sensitivity is inversely proportional to voltage.

Sensitivity of a galvanometer can be increased by a) Increasing the number of turns of the coil b) Decreasing the magnetic field c) Increasing the ratio c ⁄BAN d) Decreasing the area of the coil

Description : Sensitivity of a galvanometer can be increased by a) Increasing the number of turns of the coil b) Decreasing the magnetic field c) Increasing the ratio c ⁄BAN d) Decreasing the area of the coil

Last Answer : a) Increasing the number of turns of the coil

If we increase the current sensitivity of a galvanometer the voltage sensitivity will

Last Answer : If we increase the current sensitivity of a galvanometer the voltage sensitivity will Decrease.

The coil of a moving coil galvanometer has an effective area of 4xx10^(-2)m^(2)`. It is suspended in a magnetic field of `5xx10^(-2)` Wb `m^(-2)`. If

Description : The coil of a moving coil galvanometer has an effective area of 4xx10^(-2)m^(2)`. It is suspended in a magnetic field of `5xx10^(-2)` Wb `m^(-2)`. If

Last Answer : The coil of a moving coil galvanometer has an effective area of 4xx10^(-2)m^(2)`. It is suspended in a ... D. current sensitivity is `40 deg` `A^(-1)`

In a moving coil galvanometer, the deflection of the coil q is related to the electrical current i by the relation

Description : In a moving coil galvanometer, the deflection of the coil q is related to the electrical current i by the relation

Last Answer : In a moving coil galvanometer, the deflection of the coil q is related to the electrical current i by the ... theta^(2)` D. `I prop sqrt(theta)`

A moving coil galvanometer is converted into an ammeter reads upto `0.03 A` by connecting a shunt of resistance `4r` across it and ammeter reads up `0

Description : A moving coil galvanometer is converted into an ammeter reads upto `0.03 A` by connecting a shunt of resistance `4r` across it and ammeter reads up `0

Last Answer : A moving coil galvanometer is converted into an ammeter reads upto `0.03 A` by connecting a shunt of resistance `4r` ... `0.02A` C. `0.03A` D. `0.04A`

To send 10% of the main current through a moving coil galvanometer of resistance `99omega`, the shunt required is –

Description : To send 10% of the main current through a moving coil galvanometer of resistance `99omega`, the shunt required is –

Last Answer : To send 10% of the main current through a moving coil galvanometer of resistance `99omega`, the shunt ... `11Omega` C. `10Omega` D. `9.9Omega`

A galvanometer with 20 ohms coil resistence has a full-scale deflection of 10 mA. A 0.02 ohm is placed across the meter to increase its rating capacity. What is the new full scale current for the meter?

Description : A galvanometer with 20 ohms coil resistence has a full-scale deflection of 10 mA. A 0.02 ohm is placed across the meter to increase its rating capacity. What is the new full scale current for the meter?

Last Answer : False.

An analog voltmeter has a sensitivity of 10kΩ/volt. The galvanometer used in constructing the instrument

Description : An analog voltmeter has a sensitivity of 10kΩ/volt. The galvanometer used in constructing the instrument will produce a full scale deflection when the current passed through it is  (a) 10 mA (b) 20 mA (c) 50 mA (d) 100 μA

Last Answer : An analog voltmeter has a sensitivity of 10kΩ/volt. The galvanometer used in constructing the instrument will produce a full scale deflection when the current passed through it is 100 μA

The pole pieces of the magnet used in a pivoted coil galvanometer are

Description : The pole pieces of the magnet used in a pivoted coil galvanometer are

Last Answer : The pole pieces of the magnet used in a pivoted coil galvanometer are A. plane surfaces of a ... magnet D. cylindrical sufaces of a horse-shoe magnet

A galvanometer has a coil of resistance `100 Omega` and gives a full-scale deflection for `30 mA` current. If it is to work as a voltmeter of `30 V` r

Description : A galvanometer has a coil of resistance `100 Omega` and gives a full-scale deflection for `30 mA` current. If it is to work as a voltmeter of `30 V` r

Last Answer : A galvanometer has a coil of resistance `100 Omega` and gives a full-scale deflection for `30 mA` current. ... Omega` C. `1000 Omega` D. `1800 Omega`

Aboard ship, a grounded field coil in an AC motor can be determined by using a _________________. A. portable growler B. galvanometer C. visual inspection D. megohmmeter

Description : Aboard ship, a grounded field coil in an AC motor can be determined by using a _________________. A. portable growler B. galvanometer C. visual inspection D. megohmmeter

Last Answer : Answer: D

In a galvanometer, what two methods are used to indicate the amount of coil rotation?

Description : In a galvanometer, what two methods are used to indicate the amount of coil rotation?

Last Answer : The pointer arrangement and the light and mirror arrangement.

What physical component of a galvanometer provides the restoring force for the coil?

Description : What physical component of a galvanometer provides the restoring force for the coil?

Last Answer : Phosphor bronze ribbons.

In a galvanometer, what two methods are used to indicate the amount of coil rotation?

Description : In a galvanometer, what two methods are used to indicate the amount of coil rotation?

Last Answer : he pointer arrangement and the light and mirror arrangement.

What physical component of a galvanometer provides the restoring force for the coil?

Description : What physical component of a galvanometer provides the restoring force for the coil?

Last Answer : Phosphor bronze ribbons.

The current I passing through the galvanometer coil is related to the angle of deflection θ as a) I ∝ θ b) I 1/∝ θ c) I ∝ θ 2 d) I 1/∝ θ 2

Description : The current I passing through the galvanometer coil is related to the angle of deflection θ as a) I ∝ θ b) I 1/∝ θ c) I ∝ θ 2 d) I 1/∝ θ 2

Last Answer : a) I ∝ θ

A galvanometer in which the coil quickly comes to rest is called a ________ galvanometer a) Ballistic b) Mirror c) Astatic d) Dead beat

Description : A galvanometer in which the coil quickly comes to rest is called a ________ galvanometer a) Ballistic b) Mirror c) Astatic d) Dead beat

Last Answer : d) Dead beat

Which one of the following is the way in which a galvanometer is converted into a voltmeter? Is it by connecting: w) a high resistance coil in parallel with its moveable coil x) a low resistance coil in parallel with its moveable coil y) a high resistance coil in series with its moveable coil z) a low resistance coil in series with its moveable coil

Description : Which one of the following is the way in which a galvanometer is converted into a voltmeter? Is it by connecting: w) a high resistance coil in parallel with its moveable coil x) a low resistance ... coil in series with its moveable coil z) a low resistance coil in series with its moveable coil 

Last Answer : ANSWER: Y -- A HIGH RESISTANCE COIL IN SERIES WITH ITS MOVEABLE COIL 

(True or False) The larger the current required to produce full-scale deflection of the meter coil, the better the sensitivity of the meter.

Description : (True or False) The larger the current required to produce full-scale deflection of the meter coil, the better the sensitivity of the meter.

Last Answer : False.

If the length of a heater coil is reduced by 10% of its original length, then Power consumed by heater will? A. Increase over 10% B. Decrease by 10% (Answer) C. Decrease by 0.5% D. Increase by 0.5%

Description : If the length of a heater coil is reduced by 10% of its original length, then Power consumed by heater will? A. Increase over 10% B. Decrease by 10% (Answer) C. Decrease by 0.5% D. Increase by 0.5%

Last Answer : B. Decrease by 10% (Answer)

A close coil helical spring when subjected to a moment M having its axis along the axis of the helix (A) It is subjected to pure bending (B) Its mean diameter will decrease (C) Its number of coils will increase (D) All the above

Description : A close coil helical spring when subjected to a moment M having its axis along the axis of the helix  (A) It is subjected to pure bending  (B) Its mean diameter will decrease  (C) Its number of coils will increase  (D) All the above 

Last Answer : (A) It is subjected to pure bending 

In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle . Sensitivity of inclined tube to sensitivity of U-tube is equal to (A) Sin (B) 1/Sin (C) Cos (D) 1/Cos

Description : In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle . Sensitivity of inclined tube to sensitivity of U-tube is equal to (A) Sin (B) 1/Sin (C) Cos (D) 1/Cos

Last Answer : Answer: Option B

A small swamping resistance is connected in series with operating coil of a moving coil ammter in order to compensate for the effects of ____

Description : A small swamping resistance is connected in series with operating coil of a moving coil ammter in order to compensate for the effects of ____

Last Answer : temperature variation

In a dynamo-meter type of moving coil instrument a swamping resistance is provided in order to:

Last Answer : In a dynamo-meter type of moving coil instrument a swamping resistance is provided inorder to: Provide equal time constant for moving coil and fixed coil, when used for ac measurement

Stacking antenna elements A. increases sensitivity to weak signals B. will suppress odd harmonics C. decrease signal to noise ratio D. increases selectivity

Description : Stacking antenna elements A. increases sensitivity to weak signals B. will suppress odd harmonics C. decrease signal to noise ratio D. increases selectivity

Last Answer : A. increases sensitivity to weak signals

A galvanometer has resistance of 120 Ω. In order to pass 5% of the main current in it, the value of shunt resistance Rs must be equal to a) 6.3 Ω b) 6 Ω c) 2 Ω d) 2.3 Ω

Description : A galvanometer has resistance of 120 Ω. In order to pass 5% of the main current in it, the value of shunt resistance Rs must be equal to a) 6.3 Ω b) 6 Ω c) 2 Ω d) 2.3 Ω

Last Answer : a) 6.3 Ω

A galvanometer of 65 Ω resistance gives full scale deflection with 4 mA current. In order to convert it into ammeter, the range of 10 A is connected with it, the shunt resistance should be a) 0.1 Ω b) 0.2 Ω c) 0.06 Ω d) 0.03 Ω

Description : A galvanometer of 65 Ω resistance gives full scale deflection with 4 mA current. In order to convert it into ammeter, the range of 10 A is connected with it, the shunt resistance should be a) 0.1 Ω b) 0.2 Ω c) 0.06 Ω d) 0.03 Ω

Last Answer : d) 0.03 Ω

If the voltage applied to a moving disk frequency meter decreases, while the applied frequency remains the same, the frequency indication will _____________. A. increase B. decrease C. remain the same D. oscillate

Description : If the voltage applied to a moving disk frequency meter decreases, while the applied frequency remains the same, the frequency indication will _____________. A. increase B. decrease C. remain the same D. oscillate

Last Answer : Answer: C

Moving tube electrodes apart to decrease interelectrode capacitance causes an increase in the effect of what property?

Description : Moving tube electrodes apart to decrease interelectrode capacitance causes an increase in the effect of what property?

Last Answer : Transit time

What would make someone suddenly have an increase of sensitivity to smell?

Description : What would make someone suddenly have an increase of sensitivity to smell?

Last Answer : Pregnancy?

How can i increase the sensitivity on my macbook pro's airport?

Description : How can i increase the sensitivity on my macbook pro's airport?

Last Answer : isn’t that due to the fact the Mac is made of metal and therefore the signal can’t get to the ariel?

The following statement(s) is/are true concerning initial microbiologic diagnostic techniques. a. Appropriate expeditious transport of specimens to the microbiology laboratory is essential for obtaining accurate clinical information b. The use of potassium hydroxide in preparing a specimen slide for light microscopy will be useful in identification of anaerobic bacteria c. Antibiotic sensitivity is determined by exposing the specific microorganism to varying amounts of antibiotic with the concentration of the antibiotic inhibiting growth referred to as the MIC (minimal inhibitory concentration) d. Serum levels of antimicrobial agents should achieve in excess of a 4-to 8-fold increase over the MIC to be considered clinically efficacious.

Description : The following statement(s) is/are true concerning initial microbiologic diagnostic techniques. a. Appropriate expeditious transport of specimens to the microbiology laboratory is essential for obtaining accurate ... a 4-to 8-fold increase over the MIC to be considered clinically efficacious.

Last Answer : Answer: a, c, d Because most surgical infections are polymicrobial, specimens should be cultured for aerobic and anaerobic bacteria, as well as fungi. Although aerobic and aerotolerant ... fold increase over MIC during the peak serum level have been demonstrated to be clinically efficacious

External shunts are sometimes used with ammeters to _______. A. increase meter sensitivity B. permit shunts with larger resistances to be utilized C. prevent damage to the meter movement from heat generated by the shunt D. enable the construction of a compact meter with a virtually unlimited range

Description : External shunts are sometimes used with ammeters to _______. A. increase meter sensitivity B. permit shunts with larger resistances to be utilized C. prevent damage to the meter movement from heat generated by the shunt D. enable the construction of a compact meter with a virtually unlimited range

Last Answer : Answer: C

Hypersecretion of growth hormone in adults does not cause further increase in height, because (a) epiphyseal plates close after adolescence (b) bones loose their sensitivity to growth hormone in adults (c) muscle fibres do not grow in size after birth (d) growth hormone becomes inactive in adults.

Description : Hypersecretion of growth hormone in adults does not cause further increase in height, because (a) epiphyseal plates close after adolescence (b) bones loose their sensitivity to growth hormone in adults (c) muscle fibres do not grow in size after birth (d) growth hormone becomes inactive in adults.

Last Answer : (a) epiphyseal plates close after adolescence

Prostaglandins are chemical substances thought to a) increase sensitivity of pain receptors. Prostaglandins are believed to increase sensitivity to pain receptors by enhancing the pain-provoking effect of bradykinin. b) reduce the perception of pain. Endorphins and enkephalins reduce or inhibit transmission or perception of pain. c) inhibit the transmission of pain. Endorphins and enkephalins reduce or inhibit transmission or perception of pain. d) inhibit the transmission of noxious stimuli. Morphine and other opioid medications inhibit the transmission of noxious stimuli by mimicking enkephalin and endorphin.

Description : Prostaglandins are chemical substances thought to a) increase sensitivity of pain receptors. Prostaglandins are believed to increase sensitivity to pain receptors by enhancing the pain-provoking ... opioid medications inhibit the transmission of noxious stimuli by mimicking enkephalin and endorphin.

Last Answer : a) increase sensitivity of pain receptors. Prostaglandins are believed to increase sensitivity to pain receptors by enhancing the pain-provoking effect of bradykinin.

Which preamplifier design (high-impedance or transimpedance) provides improvements in bandwidth and greater dynamic range with some degradation in sensitivity from an increase in noise?

Description : Which preamplifier design (high-impedance or transimpedance) provides improvements in bandwidth and greater dynamic range with some degradation in sensitivity from an increase in noise?

Last Answer : Transimpedance.

Hypersecretion of Growth Hormone in adults does not cause further increase in height, because: (1) Epiphyseal plates close after adolescence. (2) Bones loose their sensitivity to Growth Hormone in adults. (3) Muscle fibres do not grow in size after birth. (4) Growth Hormone becomes inactive in adults.

Description : Hypersecretion of Growth Hormone in adults does not cause further increase in height, because: (1) Epiphyseal plates close after adolescence. (2) Bones loose their sensitivity to Growth Hormone in adults. ( ... fibres do not grow in size after birth. (4) Growth Hormone becomes inactive in adults.

Last Answer : (1) Epiphyseal plates close after adolescence.

To limit the current flow through a DC voltmeter to as low a value as possible, the moving coil circuit is provided with a/an _____________. A. high series resistance B. high parallel resistance C. series inductor D. external shunt

Description : To limit the current flow through a DC voltmeter to as low a value as possible, the moving coil circuit is provided with a/an _____________. A. high series resistance B. high parallel resistance C. series inductor D. external shunt

Last Answer : Answer: A

Which of the following electric meter movements uses a stationary permanent magnet and movable coil? A. D'Arsonval B. Electrodynamometer C. Moving iron-vane D. Inclined coil iron-vane

Description : Which of the following electric meter movements uses a stationary permanent magnet and movable coil? A. D'Arsonval B. Electrodynamometer C. Moving iron-vane D. Inclined coil iron-vane

Last Answer : Answer: A

A device which converts chemical energy into electrical energy is called -----? A. motor B. generator C. moving-coil meter D. battery (Answer)

Description : A device which converts chemical energy into electrical energy is called -----? A. motor B. generator C. moving-coil meter D. battery (Answer)

Last Answer : D. battery (Answer)

: Moving a coil in and out of magnetic field induces A. force B. potential difference C. e.m.f D. voltage

Description : : Moving a coil in and out of magnetic field induces A. force B. potential difference C. e.m.f D. voltage

Last Answer : e.m.f

In generators, the rate of change of flux linkage is maximum when the coil is moving through the A. vertical position B. horizontal position C. diagonal position D. at an angle of 45

Description : In generators, the rate of change of flux linkage is maximum when the coil is moving through the A. vertical position B. horizontal position C. diagonal position D. at an angle of 45

Last Answer : horizontal position

Explain the construction and working of moving coil instrument.

Description : Explain the construction and working of moving coil instrument.

Last Answer : Construction: The moving part is a coil wound on a light aluminium frame, mounted on a shaft made of stainless steel which is pivoted at either ends on jewel bearing made of sapphire. The coil is placed between ... . Where B is magnetic flux, N is number of turns and L is length of coil. 

Moving coil in dynamometer wattmeter connected a) In series with fixed coil b) Across supply c) In series with load d) Across load

Description : Moving coil in dynamometer wattmeter connected a) In series with fixed coil b) Across supply c) In series with load d) Across load

Last Answer : Ans: Across supply

What is the mathematical formula for computing the output voltage from a moving coil in a magnetic field?

Description : What is the mathematical formula for computing the output voltage from a moving coil in a magnetic field?

Last Answer : 8. e = Emax sine θ.

In a moving coil ammeter, a ___ is connected in series with the coil to compensate for temperature variations

Description : In a moving coil ammeter, a ___ is connected in series with the coil to compensate for temperature variations

Last Answer : swamping resistors