Legal Metrology β’ Paper-I
A parallel circuit has two branches. In one branch, R and L are in series and in the other branch; R and C are in series. The circuit will exhibit unity power factor when
A)
R = L/C
B)
R = sqrt(L/C)
C)
R = C/L
D)
R = sqrt(C/L)
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'R = C/L' (Option C).
Legal Metrology β’ Paper-I
In a circuit where the voltage and current sources are ideal, with a 5A current source, a 10V voltage source, and a 2Ξ© resistor, the voltage (Vout) across the current source is
A)
0 V
B)
5 V
C)
10 V
D)
20 V
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '0 V' (Option A).
Legal Metrology β’ Paper-I
The boundary between p-type material and n-type material is called
A)
a diode.
B)
a reverse-biased diode.
C)
a pn junction.
D)
a forward-biased diode.
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'a pn junction.' (Option C).
Legal Metrology β’ Paper-I
For a network of 11 branches and 6 nodes, what is the number of independent loops?
A)
4
B)
5
C)
6
D)
11
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '6' (Option C).
Legal Metrology β’ Paper-I
An impulse function consist of
A)
pure dc
B)
pure ac
C)
infinite bandwidth with linear phase variations
D)
entire frequency range with constant phase
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'infinite bandwidth with linear phase variations' (Option C).
Legal Metrology β’ Paper-I
Total number of electrons that can be accommodated in various electron states in a valence band of a given solid is equal to
A)
The atomic number of the solid
B)
Half the number of the atoms in the solid
C)
The number of atoms in the solid
D)
Twice the number of the atoms in the solid
Based on established principles in Physics & Physical Sciences, the correct and most appropriate choice is 'The atomic number of the solid' (Option A).
Legal Metrology β’ Paper-I
When determining Theveninβs resistance of a circuit
A)
all sources must be open circuited
B)
all sources must be short circuited
C)
all voltage sources must be open circuited and all current sources must be short circuited
D)
all sources must be replaced by their internal resistances
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'all sources must be replaced by their internal resistances' (Option D).
Legal Metrology β’ Paper-I
The frequency spectrum of a periodic signal is
A)
Continuous
B)
Discrete
C)
Both continuous and discrete
D)
None
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Both continuous and discrete' (Option C).
Legal Metrology β’ Paper-I
The low-frequency circuit impedance and the high-frequency circuit impedance for a series resonance circuit respectively are
A)
Capacitive and inductive
B)
Inductive and capacitive
C)
Resistive and inductive
D)
Capacitive and resistive
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Capacitive and inductive' (Option A).
Legal Metrology β’ Paper-I
A DC voltage source is connected across a series R-L-C circuit. Under steady state conditions, the applied DC voltage drops entirely across the
A)
R only
B)
L only
C)
C only
D)
R and L combination
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'R and L combination' (Option D).
Legal Metrology β’ Paper-I
The material not having a negative temperature coefficient of resistivity are
A)
Metals
B)
Semiconductors
C)
Insulators
D)
None of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Semiconductors' (Option B).
Legal Metrology β’ Paper-I
Fourier transform of cos(W0 t) is,
A)
X(ο-ο0) + X(ο+ο0)
B)
1/2 [X(ο-ο0) + X(ο+ο0)]
C)
Ο[ο€(ο-ο0) + ο€(ο+ο0)]
D)
[X(ο-ο0) + X(ο+ο0)]
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Ο[ο€(ο-ο0) + ο€(ο+ο0)]' (Option C).
Legal Metrology β’ Paper-I
What happens to the resistance of a conductor if its length is increased three times and diameter is halved?
A)
Resistance remains the same
B)
Resistance is increased by 3 times
C)
Resistance is increased by 6 times
D)
Resistance is increased by 12 times
R β L/dΒ², so tripling length and halving diameter increases resistance by 3/(1/4) = 12 times.
Legal Metrology β’ Paper-I
When the positive voltage on the gate of a p-channel JFET is increased, its drain current
A)
Increases
B)
Decreases
C)
Remains the same
D)
None of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Decreases' (Option B).
Legal Metrology β’ 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)
Theveninβs theorem
B)
Norton theorem
C)
Tellegen theorem
D)
Superposition theorem
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Tellegen theorem' (Option C).
Legal Metrology β’ Paper-I
The differentiation of a unit impulse is,
A)
Infinity
B)
Zero
C)
One
D)
Two
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Zero' (Option B).
Legal Metrology β’ Paper-I
Two bulbs of 100W/ 250 V and 150W/250 V are connected in series across a supply of 250 V. The power consumed by the circuits is
A)
30 W
B)
60 W
C)
100 W
D)
250 W
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '250 W' (Option D).
Legal Metrology β’ Paper-I
In which region are both the collector-base and base-emitter junctions forward-biased?
A)
Active
B)
Cutoff
C)
Saturation
D)
Non-saturation
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Saturation' (Option C).
Legal Metrology β’ Paper-I
A coil of inductance 2H and resistance 1W is connected to a 10 V battery with negligible internal resistance. The amount of energy stored in the magnetic field is
A)
8 J
B)
50 J
C)
25 J
D)
100 J
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '25 J' (Option C).
Legal Metrology β’ Paper-I
The constant voltage source is
A)
Active and bilateral
B)
Passive and bilateral
C)
Active and unilateral
D)
Passive and unilateral
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Active and unilateral' (Option C).
Legal Metrology β’ Paper-I
The frequency spectrum indicates
A)
The relative phase of each frequency components
B)
The relative magnitude of each frequency components
C)
The relative frequency of each frequency components
D)
None of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'The relative phase of each frequency components' (Option A).
Legal Metrology β’ Paper-I
Which material is used for making permanent magnet?
A)
Carbon steel
B)
Germanium
C)
Silicon
D)
None of these
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'None of these' (Option D).
Legal Metrology β’ Paper-I
For ditortionless transmission, the amplitude and phase responses are
A)
Zero and Constant
B)
Constant and Linear
C)
Infinite and zero
D)
Linear and zero
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Constant and Linear' (Option B).
Legal Metrology β’ Paper-I
For what kind of amplifications can the active region of the common-emitter configuration be used?
A)
Voltage
B)
Current
C)
Power
D)
All of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'All of these' (Option D).
Legal Metrology β’ Paper-I
Under normal conditions a diode conducts current when it is
A)
Reverse-biased
B)
Forward-biased
C)
Avalanched
D)
Saturated
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Saturated' (Option D).
