Question
Reason (R): Extension of wattmeter range in dc circuit can be easily done by using current and potential transformer.
a.
Both A and R are true and R is correct explanation of A
b.
Both A and R are true but R is not correct explanation of A
c.
A is true R is false
d.
A is false R is true
Posted under Electronics and Communication Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. Assertion (A): A low power factor wattmeter has special constructional features to ensure accurate measurement. Reason (R): Extension of wattmeter range in dc circuit can be...
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. The scale of dynamometer wattmeter is non linear.
View solution
Q. Magnetic deflection is inversely proportional to
View solution
Q. The current passing through a resistance of 100 ± 0.2% Ω is 2 ± 0.5% A. The limiting error in computation of power will be
View solution
Q. If the secondary burden of a CT 15 VA and secondary current is 5 A, the load impedance of CT is
View solution
Q. Consider the following instruments
1. Tangent galvanometer
2. Rayleigh current balance
3. Household energy meter
4. Hot wire ammeter
Out of above absolute instruments are
View solution
Q. A 0-150 voltmeter has a guaranteed accuracy of 1% of full scale reading. If actual reading is 83 V, the percentage error is
View solution
Q. In a CRO, the frequency of output of time base generator
View solution
Q. If A = 131 ± 4 and B = 106 ± 4, the percentage range of doubt in A - B is
View solution
Q. Two resistance R1 and R2 are connected in series R1 = 528 ± 5 Ω and R2 = 325 ± 3Ω. The total resistance will be
View solution
Q. The function of shunt in an ammeter is to
View solution
Q. Which of the following does not use the principle of change in inductance?
View solution
Q. It is necessary to measure the amplitudes of two signals and also the phase difference between them. This can be done by using a
View solution
Q. An amplifier has to amplify pulses of 1 H-s duration. The minimum bandwidth of amplifier must be
View solution
Q. A moving coil meter has a resistance of 50 ohms and a full scale deflection current of 20 mA. To convert it into a voltmeter of 0-100 V range, the series resistance should be
View solution
Q. In measuring a resistance by voltmeter-ammeter method, the voltmeter can be connected either across supply or across the resistance. If the resistance is low, the voltmeters should be connected
View solution
Q. Which of the following methods can be used to measure power in a single phase circuit without using wattmeter?
1. One voltmeter, one ammeter
2. Two voltmeters, two ammeter
3. Three voltmeters
4. Three ammeters
View solution
Q. For measurement of surface temperature of solids the elements of RTD is usually in the shape of
View solution
Q. As per BIS, the number of accuracy classes of instrument is
View solution
Q. In most of instruments, the controlling torque is provided by
View solution
Q. A 0-200 V voltmeter has a sensitivity of 1 kΩ per volt. The resistance of voltmeter is
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Electronics and Communication Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!
