Which of the following statements describes the significance of ambient temperature in relation to the service life of electronic components? A. Ambient temperature should be as high as possible to drive off moisture. B. Increased ambient temperature decreases the service life of electronic components. C. Ambient temperature is not significant as long as the relative humidity is kept low. D. A reduced ambient temperature causes a corresponding reduced service life.

Which of the following statements describes the significance of ambient temperature in relation to the service life of electronic components? A. Ambient temperature should be as high as possible to drive off moisture. B. Increased ambient temperature decreases the service life of electronic components. C. Ambient temperature is not significant as long as the relative humidity is kept low. D. A reduced ambient temperature causes a corresponding reduced service life.
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Answer: B
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High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent. (A) 5 to 10 (B) 15 to 25 (C) 45 to 50 (D) 75 to 80

Description : High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ ... to 10 (B) 15 to 25 (C) 45 to 50 (D) 75 to 80

Last Answer : (C) 45 to 50

Which of the following statements describes the effects of ambient temperature on local action within lead-acid storage batteries? A. Increasing ambient temperature increases local action. B. Increasing ambient temperature decreases local action. C. Ambient temperature has no effect on local action. D. At 90°F all local action virtually ceases.

Description : Which of the following statements describes the effects of ambient temperature on local action within lead-acid storage batteries? A. Increasing ambient temperature increases local action. B. Increasing ambient ... has no effect on local action. D. At 90°F all local action virtually ceases.

Last Answer : Answer: A

Electric strip heaters are used in motor controllers to _____________. A. prevent freezing of movable contacts B. keep the components at their design ambient temperature C. prevent condensation of moisture D. minimize resistance in internal circuits

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Last Answer : Answer: C

An important factor in reducing D.C. motor commutator wear is _______________. A. keeping the ambient humidity as low as possible B. ensuring a very low brush current density C. establishing the copper oxide surface film D. all of the above

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Last Answer : Answer: C

During the constant rate period of drying of a solid, (A) Increased air humidity decreases the rate of drying (B) Increasing the air temperature decreases the drying rate (C) Surface evaporation of unbound moisture occurs (D) None of these

Description : During the constant rate period of drying of a solid, (A) Increased air humidity decreases the rate of drying (B) Increasing the air temperature decreases the drying rate (C) Surface evaporation of unbound moisture occurs (D) None of these

Last Answer : (C) Surface evaporation of unbound moisture occurs

Pick out the wrong statement: (A) Change in barometric pressure does not affect the relative humidity (B) In case of a packed tower, the operating velocity is about half of the flooding velocity, generally (C) 'Elution' means the desorption of the adsorbed solute by a solvent (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

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Last Answer : (D) The equilibrium moisture content of the solid can be reduced by increasing the absolute humidity

At 100% relative humidity, the dew point temperature of moist air is (A) Less than the wet bulb temperature (B) More than the wet bulb temperature (C) Equal to the wet bulb temperature (D) Equal to the ambient temperature

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Last Answer : a. The altitude corresponding to cabin pressure regardless of aircraft height

Cabin altitude in pressured flight is: a. The altitude corresponding to cabin pressure regardless of aircraft height b. Is presented on a second needle on the aircraft altimeter c. Altitude at which cabin pressure equals ambient pressure d. Altitude corresponding to cabin pressure in relation to MSL ISA conditions

Description : Cabin altitude in pressured flight is: a. The altitude corresponding to cabin pressure regardless of aircraft height b. Is presented on a second needle on the aircraft altimeter c. ... equals ambient pressure d. Altitude corresponding to cabin pressure in relation to MSL ISA conditions

Last Answer : a. The altitude corresponding to cabin pressure regardless of aircraft height b. Is presented on a second needle on the aircraft altimeter

Dry-bulb temperature is: a. The absolute temperature corresponding to the atmospheric pressure b. The same as the wet-bulb temperature if the relative humidity is less than 100% c. Not required to find the relative humidity d. The temperature of the air measured with an ordinary thermometer e. The dew point temperature

Description : Dry-bulb temperature is: a. The absolute temperature corresponding to the atmospheric pressure b. The same as the wet-bulb temperature if the relative humidity is less than 100% c. Not required ... d. The temperature of the air measured with an ordinary thermometer e. The dew point temperature

Last Answer : Answer: D

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Last Answer : (D) All 'a', 'b' & 'c'

The term "relative humidity" applies to a) the percentage of moisture in the air as compared to the amount of moisture the air can hold at a specific temperature b) the weight of the moisture in the air c) the dryness fraction of the air d) the amount of moisture in the air e) the amount of humidity in the air

Description : The term "relative humidity" applies to a) the percentage of moisture in the air as compared to the amount of moisture the air can hold at a specific temperature b) the weight of the moisture in the air c) ... of the air d) the amount of moisture in the air e) the amount of humidity in the air

Last Answer : ANSWER : A

Pick up the correct statement from the following: (A) Absolute humidity at a given temperature is equal to weight of moisture present in a unit volume (B) Relative humidity is the ratio of actual vapour pressure and saturation vapour pressure at the same temperature (C) Relative humidity is the ratio of the weight of the vapours present per unit volume to the weight of vapours which could be contained at the same temperature when fully saturated (D) All the above

Description : Pick up the correct statement from the following: (A) Absolute humidity at a given temperature is equal to weight of moisture present in a unit volume (B) Relative humidity is the ratio of ... of vapours which could be contained at the same temperature when fully saturated (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) O.M.C. refers to the moisture corresponding to the maximum point on the moisture content dry density curve (B) The line which shows moisture content dry density relation for soil containing a constant percentage of air voids, is known as air void line (C) The free fall of hammer for compaction is 30.5 cm (D) All the above

Description : Pick up the correct statement from the following: (A) O.M.C. refers to the moisture corresponding to the maximum point on the moisture content dry density curve (B) The line which shows moisture content dry ... void line (C) The free fall of hammer for compaction is 30.5 cm (D) All the above

Last Answer : (D) All the above

Why is it a poor practice to use a high wattage soldering iron when soldering or desoldering components on a printed circuit board? A. The circuit board will blister and warp. B. The foil wire bonded to the board may come loosened from the board. C. The circuit board has a low melting temperature. D. The solder is kept to a dull heat dissipating finish.

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Last Answer : Answer: B

If the temperature of a piece increases suddenly, the relative humidity– (1) increases (2) decreases (3) remains constant (4) fluctuates

Description : If the temperature of a piece increases suddenly, the relative humidity– (1) increases (2) decreases (3) remains constant (4) fluctuates

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If the temperature of a place increases suddenly, the relative humidity – (1) Increases (2) Decreases (3) Remains constant (4) Fluctuates

Description : If the temperature of a place increases suddenly, the relative humidity – (1) Increases (2) Decreases (3) Remains constant (4) Fluctuates

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The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the (A) Temperature rises (B) Pressure rises (C) Temperature falls (D) Pressure falls

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Last Answer : (A) Temperature rises

Which of the following decreases during evaporative cooling process with recirculated water supply? (A) Wet bulb temperature (B) Relative humidity (C) Partial pressure of vapour (D) None of these

Description : Which of the following decreases during evaporative cooling process with recirculated water supply? (A) Wet bulb temperature (B) Relative humidity (C) Partial pressure of vapour (D) None of these

Last Answer : (D) None of these

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Description : During sensible cooling process (A) Relative humidity decreases (B) Relative humidity increases (C) Wet bulb temperature decreases (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

On a day when the partial pressure of water vapor remains constant, what happens as the temperature rises?  a. the relative humidity increases  b. the relative humidity decreases  c. the relative humidity remains constant  d. the air would eventually become saturated

Description : On a day when the partial pressure of water vapor remains constant, what happens as the temperature rises?  a. the relative humidity increases  b. the relative humidity decreases  c. the relative humidity remains constant  d. the air would eventually become saturated

Last Answer : the relative humidity decreases

If the temperature of a place increases suddenly, the relative humidity (1) Increases (2) Decreases (3) Remains constant (4) Fluctuates

Description : If the temperature of a place increases suddenly, the relative humidity (1) Increases (2) Decreases (3) Remains constant (4) Fluctuates

Last Answer : Decreases

If the air is only holding one-third as much moisture as it can possibly hold what is the relative humidity?

Description : If the air is only holding one-third as much moisture as it can possibly hold what is the relative humidity?

Last Answer : 35

The moisture content lines in psychrometric chart are also called as A. relative humidity lines B. specific humidity lines C. both a. and b. D. none of the above

Description : The moisture content lines in psychrometric chart are also called as A. relative humidity lines B. specific humidity lines C. both a. and b. D. none of the above

Last Answer : ANSWER : B

The insulation of electric generators during short idle periods should be _____________. A. allowed to cool slowly to ambient temperatures B. flashed with direct current to remove any residual magnetism C. kept warm by using strip or space heaters D. relieved of all capacitive charge by grounding the conductors

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Last Answer : Answer: C

If a DC motor runs hot, the cause may be _____________. A. high mica condition B. low ambient temperature C. clogged ventilation ducts D. an open in the shunt field

Description : If a DC motor runs hot, the cause may be _____________. A. high mica condition B. low ambient temperature C. clogged ventilation ducts D. an open in the shunt field

Last Answer : Answer: C

Which of the listed conditions could indicate the need for cleaning electrical insulation? A. Low ambient temperature B. Low operating temperature C. High dielectric strength D. Low megger readings

Description : Which of the listed conditions could indicate the need for cleaning electrical insulation? A. Low ambient temperature B. Low operating temperature C. High dielectric strength D. Low megger readings

Last Answer : Answer: D

Magnetic controller contacts may become welded together during operating conditions as a result of _____________. A. high spring pressure B. high ambient temperature C. an open coil D. low voltage on operating coil

Description : Magnetic controller contacts may become welded together during operating conditions as a result of _____________. A. high spring pressure B. high ambient temperature C. an open coil D. low voltage on operating coil

Last Answer : Answer: D

When troubleshooting a magnetic controller, it is found that the contacts are welded together. The most probable cause is _____________. A. excessive operation at low load B. high ambient temperature C. low voltage on the operating coil D. high voltage on the operating coil

Description : When troubleshooting a magnetic controller, it is found that the contacts are welded together. The most probable cause is _____________. A. excessive operation at low load B. high ambient temperature C. low voltage on the operating coil D. high voltage on the operating coil

Last Answer : Answer: C

If the temperature inside a room is increased, what will be the relative humidity? -General Knowledge

Description : If the temperature inside a room is increased, what will be the relative humidity? -General Knowledge

Last Answer : The answer is 'Decrease'

If the temperature inside a room is increased, what will be the relative humidity? -General Knowledge

Description : If the temperature inside a room is increased, what will be the relative humidity? -General Knowledge

Last Answer : If relative humidity is 20 percent, for example, the air contains 20 percent of the water vapor that it could potentially hold at that temperature. If you increase the temperature, however, the amount of water vapor the air can hold increases, so the relative humidity decreases

If the temperature inside a room is increased, the relative humidity will ______? (1) increase (2) decrease (3) remain unchanged (4) none of these

Description : If the temperature inside a room is increased, the relative humidity will ______? (1) increase (2) decrease (3) remain unchanged (4) none of these

Last Answer : (2) decrease Explanation: This is because temperatures in the home can be much different than the temperature outside. This is because of that important relationship between temperature and how much maximum moisture can be in the air.

If the temperature inside a room is increased, what will be the relative humidity?

Description : If the temperature inside a room is increased, what will be the relative humidity?

Last Answer : Decrease

Pick out the wrong statement (A) A horizontal line on the humidity chart indicates the temperature changes at constant molal humidity (B) When water is cooled from 80 to 70°C by exposure to the air with a wet bulb temperature of 60°C, then both the approach & the range would be 10°C (C) For unsaturated air-water vapor mixture at atmospheric conditions, the wet bulb temperature & adiabatic cooling lines are the same (D) Relative saturation of unsaturated mixture of water vapor & air cannot be increased by either reducing the mixture temperature or by increasing the total pressure

Description : Pick out the wrong statement (A) A horizontal line on the humidity chart indicates the temperature changes at constant molal humidity (B) When water is cooled from 80 to 70°C by exposure ... & air cannot be increased by either reducing the mixture temperature or by increasing the total pressure

Last Answer : (D) Relative saturation of unsaturated mixture of water vapor & air cannot be increased by either reducing the mixture temperature or by increasing the total pressure

Boiling point diagram is not affected by the ambient (A) Pressure (B) Humidity (C) Temperature (D) Both (B) and (C)

Description : Boiling point diagram is not affected by the ambient (A) Pressure (B) Humidity (C) Temperature (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Pick up the incorrect statement from the following. For performing compressive strength test of cement (A) Cement and standard sand mortar are used in the ratio of 1 : 3 (B) Water is added at the rate of (P/4) + 3.0 percentage of water where P is the percentage of water for standard consistency (C) A cube mould of 10 cm × 10 cm × 10 cm is used (D) The prepared moulds are kept in a atmosphere of 50% relative humidity

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Last Answer : Answer: Option A

The curing method is said to be good, when the relative humidity is kept [ A ] Greater than 80% [ B ] Less than 50% [ C ] 50% - 80% [ D ] None of the above

Description : The curing method is said to be good, when the relative humidity is kept [ A ] Greater than 80% [ B ] Less than 50% [ C ] 50% - 80% [ D ] None of the above

Last Answer : [ A ] Greater than 80%

The curing method is said to be good, when the relative humidity is kept [ A ] Greater than 80% [ B ] Less than 50% [ C ] 50% - 80% [ D ] None of the above

Description : The curing method is said to be good, when the relative humidity is kept [ A ] Greater than 80% [ B ] Less than 50% [ C ] 50% - 80% [ D ] None of the above

Last Answer : [ A ] Greater than 80%

Motor name plate data includes '°°C rise'. This indicates the _____________. A. actual running temperature of the winding from no load to full load B. permissible temperature rise of the windings above the designed ambient temperature C. maximum allowable temperature rise above normal full load operating temperature D. maximum allowable temperature rise for continuous no load service

Description : Motor name plate data includes '°°C rise'. This indicates the _____________. A. actual running temperature of the winding from no load to full load B. permissible temperature rise ... above normal full load operating temperature D. maximum allowable temperature rise for continuous no load service

Last Answer : Answer: B

A kiosk a) is data organised and presented in a manner that has additional value beyond t he value of the data itself b) combines microscopic electronic components on a single integrated circuit that processes bits according to software instructions c) is a computer station that provides the public with specific and useful information and service d) describes a computer's type, processor, and operating system e) None of these

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Last Answer : c) is a computer station that provides the public with specific and useful information and service

Magnetic controller contacts may become welded together during operation because of _____________. A. excessive magnetic gap B. low contact pressure C. an open coil D. excessive ambient temperature

Description : Magnetic controller contacts may become welded together during operation because of _____________. A. excessive magnetic gap B. low contact pressure C. an open coil D. excessive ambient temperature

Last Answer : Answer: B

Magnetic controller contacts may become welded together during operation due to _____________. A. an open coil B. low contact pressure C. excessive ambient temperature D. excessive magnetic gap

Description : Magnetic controller contacts may become welded together during operation due to _____________. A. an open coil B. low contact pressure C. excessive ambient temperature D. excessive magnetic gap

Last Answer : Answer: B

When troubleshooting electronic equipment, you should use a high impedance multimeter ________________. A. to prevent excess current flow through the meter that would damage it B. for AC measurements only and a low resistance meter for DC measurements C. whenever a low impedance meter is not available, regardless of the components being tested D. so as not to load down the circuit and obtain erroneous voltage readings

Description : When troubleshooting electronic equipment, you should use a high impedance multimeter ________________. A. to prevent excess current flow through the meter that would damage it B. for AC measurements only ... being tested D. so as not to load down the circuit and obtain erroneous voltage readings

Last Answer : Answer: D

When does Relative humidity decreases? -General Knowledge

Description : When does Relative humidity decreases? -General Knowledge

Last Answer : The answer is 'With increased temperature'

When does Relative humidity decreases? -General Knowledge

Description : When does Relative humidity decreases? -General Knowledge

Last Answer : If the water vapor content stays the same and the temperature drops, the relative humidity increases. If the water vapor content stays the same and the temperature rises, the relative humidity decreases. This is because colder air doesn't require as much moisture to become saturated as warmer air.

When does Relative humidity decreases? -General Knowledge

Description : When does Relative humidity decreases? -General Knowledge

Last Answer : If the water vapor content stays the same and the temperature drops, the relative humidity increases. If the water vapor content stays the same and the temperature rises, the relative humidity decreases. This is because colder air doesn't require as much moisture to become saturated as warmer air.

In sensible cooling process the relative humidity: A. decreases B. increases C. remains constant D. none of the above

Description : In sensible cooling process the relative humidity: A. decreases B. increases C. remains constant D. none of the above

Last Answer : ANSWER : B

When does Relative humidity decreases?

Description : When does Relative humidity decreases?

Last Answer : With increased temperature