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1000 Electrical Measurements
Quiz 1
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Q.1
Which of the following oscilloscope is used in a digital storage oscilloscope?
a) dual trace
b) conventional
c) multi trace
d) modern
Q.2
Which of the following method of measurement does a bridge circuit uses?
a) relative
b) comparison
c) absolute
d) differential
Q.3
Which of the following is the most popular method for measuring low resistance?
a) ducter ohmmeter method
b) kelvin double bridge method
c) ammeter-voltmeter method
d) potentiometer method
Q.4
Which of the following method is used for the measurement of Medium Resistance?
a) Direct-Deflection method
b) Anderson Bridge
c) Kelvin’s double bridge method
d) Carey-Foster bridge method
Q.5
Which of the following is the most sensitive detector for single frequency value?
a) oscillator
b) headphone
c) tuned detector
d) vibration galvanometer
Q.6
Under which of the following conditions a bridge is balanced?
a) When no current flows
b) When the temperature of the circuit is high
c) When power dissipation is high
d) When no voltage drop across the circuit
Q.7
Unknown capacitance value is obtained by _________
a) using a vibration galvanometer
b) using capacitance of other ratio arms
c) comparison with standard
d) using a tuned detector
Q.8
Which of the following is a balance equation for computing the resistance?
a) R1 = R2 ⁄ R4
b) R1 = R3 ⁄ R4
c) R1 = R2 R3
d) R1 = R2 R3⁄R4
Q.9
Inductance control is obtained by _________
a) using R5
b) using R4
c) using R2
d) using Lx
Q.10
A Schering bridge can be used for the ______________
a) protecting the circuit from temperature rises
b) testing capacitors
c) measuring voltages
d) measuring currents
Q.11
What is the dependence of frequency on the balance equation?
a) varies by a factor of 2
b) depends on the detector used
c) independent
d) depends on the supply magnitude
Q.12
Which of the following is the guarding arm?
a) capacitance C
b) resistance R
c) parallel RC combination
d) series RC combination
Q.13
Which of the following can be measured using Maxwell’s Inductance Capacitance Bridge?
a) Capacitance
b) Frequency
c) Mutual Inductance
d) Inductance
Q.14
A multiplier is __________
a) non-capacitive
b) capacitive
c) non-inductive
d) resistive
Q.15
The windings of a C.T. are ________
a) tied together
b) shorted
c) wound over one another
d) grounded
Q.16
How is the voltage ratio dependent on the frequency?
a) they aid each other
b) depends on the setup of the circuit
c) they are independent of each other
d) they oppose each other
Q.17
Increasing secondary burden _____________
a) decreases Is
b) keeps Is constant
c) decreases Ip
d) increases Is
Q.18
Which of the following device is used to measure power in A.C. circuits?
a) ammeter
b) wattmeter
c) voltmeter
d) ohmmeter
Q.19
When the moving coil in a Dynamometer type wattmeter deflects ________
a) pointer doesn’t move
b) current flows
c) voltage is generated
d) pointer moves
Q.20
What is the effect of capacitance on wattmeter reading?
a) opposite to that of resistance
b) aiding the capacitance
c) aiding the inductance
d) opposite to that of inductance
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