# Piezoelectric accelerometers

1.  Should not be used for high frequencies above 100Hz

2.  Should be used for low frequencies

3.  Have a low natural frequenc

4.  Should use a monitoring source of low input impedance

5.  legal authorization.

6.  direct evidence of a crime.

7.  read the person his or her constitutional rights.

8.  a reasonable belief that a crime has occurred.

9.   requested that a judge be present.

9

legal authorization.

Explanation :
No Explanation available for this question

# The meter constant of a single-phase 240 V induction watthour meter is 400 revolutions per kWh. The speed of the meter disc for a current of 10 amperes of 0.8 p.f lagging will be

1.  12.8 rpm

2.    16.02 rpm

3.  18.2 rpm

4.     21.1 rpm

4

12.8 rpm

Explanation :
No Explanation available for this question

# Dummy strain gauges are used for

1.  Compensation of temperature changes

2.  Increasing the sensitivity of bridge in which they are included

3.  compensating for different expansion

4.  Calibration of strain gauges

5.  the study of mathematics is dangerous.

6.  words are more truthful than figures.

7.  the study of mathematics is more important than other disciplines.

8.  the power of numbers is that they cannot lie.

9.   figures are sometimes used to deceive people

9

figures are sometimes used to deceive people

Explanation :
No Explanation available for this question

# The wheatstone bridge method of resistance measurement is ideally suitable for the measurement of resistance values in the range of

1.  0.01  ohm to 1 ohm

2.  0.1 ohm to 100 ohm

3.  100 ohm to 10 k-ohm

4.  100 k-ohm to 10 M-ohm

5.  stone tools were not really technology.

6.  stone tools were in use for two and a half million years.

7.  there is no way to know when stone tools first came into use.

8.  In today’s world, new technologies are constantly being developed.

9.   none of the latest technologies is as significant as the development of stone tools

9

In today’s world, new technologies are constantly being developed.

Explanation :
No Explanation available for this question

# The coils having self-inductance of 10 mH and 15 mH have an effective inductance of 40 mH, when connected in series aiding. What will be the equivalent inductance if we connect them in series-opposing

1.  20 mH

2.       10 mH

3.    5 mH

4.       zero

5.  public health campaigns that raise consciousness and propose lifestyle changes are a productive way to fight obesity.

6.  obesity is the leading cause of diabetes in our country.

7.  people in our country watch too much television and do not exercise enough.

8.  a decline in obesity would radically decrease the incidence of asthma.

9.   fast-food restaurants and unhealthy school lunches contribute greatly to obesity

9

public health campaigns that raise consciousness and propose lifestyle changes are a productive way to fight obesity.

Explanation :
No Explanation available for this question

# The scale of a 0-500 V voltmeter is divided into ten large divisions representing 50 V each and each large division a further subdivided into 10 small divisions, each representing 5 V. it is used for measurement of output voltage of a potentiometer which can be varied from 0 to 500 V. It is observed that when the sliding contact moved from its zero position, there is no perceptible movement of pointer of the voltmeter till the sliding contact reaches a position where the output voltage should be 5 V. Therefore, it can be concluded that

1.  Threshold of the voltmeter is 5 V

2.  Resolution of the voltmeter is 5 V

3.  Sensitivity of the voltmeter is 5 V

4.  None of these

5.  police who do not warn persons of their Miranda rights are guilty of a crime.

6.  a Miranda warning must be given before a police interrogation can begin.

7.  the police may no longer interrogate persons suspected of a crime unless a lawyer is present.

8.  the 1966 Supreme Court decision in Miranda should be reversed.

9.   persons who are interrogated by police should always remain silent until their lawyer comes.

9

a Miranda warning must be given before a police interrogation can begin.

Explanation :
No Explanation available for this question

# A unknown resistance is measured by substitution method. First a standard known resistance of 100 is connected in series with a circuit having a rheostat and a galvanometer. The battery voltage is 10 V and the setting of the rheostat is 500 ? and the galvanometer shows a deflection of 600. After this test, the battery voltage goes down to 9 V and when the unknown resistance is substituted for the known resistance, the galvanometer again shows a deflection of 600 with the same setting of the rheostat. The value of unknown resistance of

1.  100

2.    54 ?

3.        90 ?

4.     none of these

5.  children are better protected from the sun’s dangerous rays than adults.

6.  sales of sun protection products are at an all-time high.

7.  adults are not heeding the warnings about the dangers of sun exposure seriously enough.

8.  more adults have skin cancer now than ever before.

9.  there is not enough information disseminated about the dangers of sun exposure.

9

adults are not heeding the warnings about the dangers of sun exposure seriously enough.

Explanation :
No Explanation available for this question

# Equal resistances of 100 each are connected in each arm of a wheatstone bridge which is supplied by a 2 V battery source. The galvanometer of negligible resistance connected to the bridge can sense as low current as 1 µs. The smallest value of resistance that can be measured is

1.  20 m

2.      2 µ?

3.      20 µ?

4.        none of these

5.  yoga is more popular than high-impact aerobics.

6.  before embarking on a new exercise regimen, you should think about your needs and desires.

7.  yoga is changing the world of fitness in major ways.

8.  yoga benefits your body and mind.

9.   most people think that yoga isn’t a rigorous form of exercise

9

before embarking on a new exercise regimen, you should think about your needs and desires.

Explanation :
No Explanation available for this question

# A wheatstone bridge has ration arms of 1000 W and 100 W resistance, the standard resistance arms consists 4 decade resistance boxes of 1000, 100, 10, 1 W steps. The maximum and minimum values of unknown resistance which can be determined with this step is

1.  111100 , 1?

2.  11110 ?, 10?

3.  111100 ?, 10?

4.  None of these

5.  school cafeterias have always emphasized nutritional guidelines over any other considerations.

6.  young people would rather eat in a school cafeteria than a local fast-food restaurant.

7.  school lunch menus are becoming healthier due to major new initiatives on the part of school districts.

8.  it is possible to make school lunches both healthier and appealing without spending a great deal of money and undertaking a radical transformation.

9.   vegetarian lunch options would greatly improve the nutritional value of the school lunch program

9

it is possible to make school lunches both healthier and appealing without spending a great deal of money and undertaking a radical transformation.

Explanation :
No Explanation available for this question

# A wheatstone bridge cannot be used for  precision measurements because errors are introduced into  on account of

2.  Thermo-electric emfs

3.  Contact resistances

4.  All of these

5.  resent the interference of healthcare managers.

6.  no longer have adequate training.

7.  care a great deal about their patients.

8.  are less independent than they used to be.

9.   are making a lot less money than they used to make

9