Legal Metrology • Paper-I
According to maximum power transfer theorem, when is the maximum power absorbed by one network from another network?
A)
The impedance of one of the network is half that of the outer
B)
The impedance of one is the complex conjugate of the other
C)
The impedance of one is equal to that of the other
D)
Only the resistive parts of both are equal
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'The impedance of one of the network is half that of the outer' (Option A).
Legal Metrology • Paper-I
A series RLC circuit resonance at 1 MHz at frequency of 1.1 MHz the circuit impedance is
A)
capacitive
B)
inductive
C)
resistive
D)
none of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'capacitive' (Option A).
Legal Metrology • Paper-I
Which one of the following statements is correct? The wavelength of a wave propagating in a waveguide is
A)
smaller than the frees pace wavelength
B)
greater than the frees pace wavelength
C)
directly proportional to the group velocity
D)
inversely proportional to the phase velocity
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'smaller than the frees pace wavelength' (Option A).
Legal Metrology • Paper-I
If frequency of a plane electromagnetic wave increases four times the depth of penetration, when the wave is incident normally on a good conductor will
A)
increase by factor of two
B)
decrease by a factor of four
C)
remain same
D)
decrease by a factor of two
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'decrease by a factor of two' (Option D).
Legal Metrology • Paper-I
The number of independent KVL and KCL equations for a network with n-nodes and l links are respectively
A)
l and n
B)
l and n-1
C)
n-1 and l
D)
n and l-1
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'n and l-1' (Option D).
Legal Metrology • Paper-I
In a single-phase power factor meter, the controlling torque is
A)
provided by spring control
B)
provided by gravity control
C)
provided by stiffness of suspension
D)
not required
Correct option: D — not required. This matches the standard definition/result for the stated question.
Legal Metrology • Paper-I
The Thevenin resistance across the diode in the circuit is
A)
2 K
B)
1/2 K
C)
3 K
D)
3K/2
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '3 K' (Option C).
Legal Metrology • Paper-I
Cauer and Foster forms of realizations are used only for
A)
driving point reactance functions
B)
transfer reactance functions
C)
driving point impedance functions
D)
transfer impedance functions
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'driving point reactance functions' (Option A).
Legal Metrology • Paper-I
The correct sequence of the blocks in an analog data acquisition unit starting from the input is
A)
Transducer-Recorder-Signal Conditioner
B)
Transducer-Signal Conditioner-Recorder
C)
Signal Conditioner-Transducer-Recorder
D)
Signal Conditioner-Recorder-Transducer
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Transducer-Recorder-Signal Conditioner' (Option A).
Legal Metrology • Paper-I
The battery cells in an electronic multimeter are required to measure which one of the following?
A)
Resistance
B)
Voltage
C)
Current
D)
Power
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Voltage' (Option B).
Legal Metrology • Paper-I
Ferrimagnetic materials generally find application as
A)
conductors
B)
insulators
C)
superconductors
D)
semiconductors
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'insulators' (Option B).
Legal Metrology • Paper-I
Which one of the following materials does not have a covalent bond?
A)
Metals
B)
Silicon
C)
Organic polymers
D)
Diamond
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Diamond' (Option D).
Legal Metrology • Paper-I
Rectifier moving coil instruments respond to
A)
peak value, irrespective of the nature of the waveform
B)
average value, for all waveforms
C)
rms value for all waveforms
D)
rms value, for symmetrical square waveforms
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'peak value, irrespective of the nature of the waveform' (Option A).
Legal Metrology • Paper-I
Which one of the following is not permanent magnetic material?
A)
Chromium steel
B)
Silicon iron
C)
Cobalt steel
D)
Alnico
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Cobalt steel' (Option C).
Legal Metrology • Paper-I
The ratio of the velocity of a wave in free-space to that in the conducting medium is known as
A)
space factor
B)
attenuation
C)
pointing vector
D)
refractive index
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'pointing vector' (Option C).
Legal Metrology • Paper-I
All magnetic materials lose their magnetic properties when
A)
Cooled to low temperature
B)
Heated to high temperature
C)
Kept in an aluminium box
D)
Kept in vacuum
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Kept in an aluminium box' (Option C).
Legal Metrology • Paper-I
Which of the following theorems can be applied to any network-linear or non-linear, active or passive, time-variant or time-invariant?
A)
Thevenin theorem
B)
Norton theorem
C)
Tellegen theorem
D)
Superposition theorem
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Tellegen theorem' (Option C).
Legal Metrology • Paper-I
In a network containing resistance and reactances, the roots of the characteristics equation given for the circuit?
A)
The forced response
B)
The total response
C)
The natural response
D)
The damped response
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'The damped response' (Option D).
Legal Metrology • Paper-I
What one of the following decides the time of response of an indicating instrument?
A)
Deflecting system
B)
Controlling system
C)
Damping system
D)
Pivot and Jewel bearing
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Pivot and Jewel bearing' (Option D).
Legal Metrology • Paper-I
Which one of the following has the highest accuracy?
A)
Standard resistance
B)
Standard inductance
C)
Standard capacitance
D)
Standard mutual inductance
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Standard resistance' (Option A).
Legal Metrology • Paper-I
On which of the following factors does the value of critical current density in a superconductor depend?
A)
Temperature
B)
Applied magnetic field
C)
Temperature and applied magnetic field
D)
Silsbee’s rule
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Temperature' (Option A).
Legal Metrology • Paper-I
Ferrites are the materials which have
A)
low permeability and low dielectric loss
B)
low permeability and high dielectric loss
C)
high permeability and low dielectric loss
D)
high permeability and high dielectric loss
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'low permeability and high dielectric loss' (Option B).
Legal Metrology • Paper-I
In a digital voltmeter, the oscillator frequency is 400 kHz and the ramp voltage fills from 8 V to 0 V in 20 msec. The number of pulses countered by the counter is
A)
800
B)
2000
C)
4000
D)
8000
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '8000' (Option D).
Legal Metrology • Paper-I
For a series RLC circuit, the power factor at the lowest half power frequency is
A)
0.5 lagging
B)
0.5 leading
C)
unity
D)
0.707 leading
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '0.5 lagging' (Option A).
Legal Metrology • Paper-I
The electric field in the vicinity of two oppositely charged parallel conductors is
A)
radial uniformly
B)
in parallel lines between the two imaginary parallel planes passing through the centres of the two conductors
C)
not uniform and its direction changes from point to point
D)
in parallel circular paths between the two conductors, with the centre of the circles located at the mid-point of a line joining the two centres of the two conductors
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'in parallel circular paths between the two conductors, with the centre of the circles located at the mid-point of a line joining the two centres of the two conductors' (Option D).
