Inspector of Factories • Paper-I
Driving point impedance Z(S) = S(S2 + 1) / (S2 + 4) is not realizable because the -
A)
number of zeros is more than the number of poles
B)
poles and zeros lie on the imaginary axis
C)
poles and zeros do not alternate on imaginary axis
D)
poles and zeros are not located on the real axis
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'poles and zeros are not located on the real axis' (Option D).
Inspector of Factories • Paper-I
To avoid the effect of stray magnetic field in A.C. bridge we can use -
A)
magnetic screening
B)
Wagner earthing device
C)
Wave filters
D)
All of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'All of these' (Option D).
Inspector of Factories • Paper-I
Consider the network given below: [Network with V, R, L]. The time constant of the circuit is -
A)
L/2R
B)
L/R
C)
L/3R
D)
3L/R
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '3L/R' (Option D).
Inspector of Factories • Paper-I
A Hurwiz polynomial has -
A)
zeros only in the left half of the s-plane
B)
poles only in the left half of the s-plane
C)
zeros anywhere in the s-plane
D)
poles on the jw axis only
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'poles only in the left half of the s-plane' (Option B).
Inspector of Factories • Paper-I
Which of the following will happen if a voltmeter is connected like an ammeter in series to the load?
A)
there will be almost no current in the circuit
B)
the measurement will be too high
C)
the meter will burn out
D)
a very high current will flow
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'the measurement will be too high' (Option B).
Inspector of Factories • Paper-I
Fermi level in a P-type semiconductor lies close to -
A)
The top of the valence band
B)
The bottom of the valence band
C)
The top of the conduction band
D)
The bottom of the conduction band
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'The bottom of the valence band' (Option B).
Inspector of Factories • Paper-I
Superposition theorem is valid only for -
A)
linear circuits
B)
non-linear circuits
C)
both (a) and (b)
D)
neither (a) nor (b)
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'non-linear circuits' (Option B).
Inspector of Factories • Paper-I
Two, two port network are connected in cascade. The combination is to be represented as a single two port network. The parameters of the network are obtained by the multiplying the individuals -
A)
Z-parameter matrix
B)
h-parameter matrix
C)
Y-parameter matrix
D)
ABCD parameter matrix
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Y-parameter matrix' (Option C).
Inspector of Factories • Paper-I
A series resonant circuit has an inductive reactance of 1000 W, a capacitive reactance of 1000 W and a resistance of 0.1 W. If the resonant frequency is 10 MHz, then the bandwidth of the circuit will be-
A)
1 kHz
B)
10 kHz
C)
1 MHz
D)
0.1 kHz
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '0.1 kHz' (Option D).
Inspector of Factories • Paper-I
An energy-meter having a meter constant of 1200 revolutions per kWh is found to make 5 revolutions in 75 s. The load power is -
A)
500 W
B)
100 W
C)
200 W
D)
1000 W
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '1000 W' (Option D).
Inspector of Factories • Paper-I
In an RLC parallel circuit the impedance at resonance is -
A)
Maximum
B)
Minimum
C)
Zero
D)
Infinity
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Zero' (Option C).
Inspector of Factories • Paper-I
The nodal method of circuit analysis is based on -
A)
KVL and Ohm’s law
B)
KCL and Ohm’s law
C)
KVL and KCL
D)
both (a) & (b)
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'KVL and KCL' (Option C).
Inspector of Factories • Paper-I
Reciprocal of permeability is -
A)
conductivity
B)
reluctivity
C)
susceptibility
D)
permittivity
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'permittivity' (Option D).
Inspector of Factories • Paper-I
The algebraic sum of all the currents meeting a junction is equal to -
A)
1
B)
-1
C)
zero
D)
can’t say
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'zero' (Option C).
Inspector of Factories • Paper-I
The number of independent loops for a network with n-nodes and b-branches is -
A)
n – 1
B)
b – n
C)
b – n + 1
D)
independent of no. of nodes
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'b – n + 1' (Option C).
Inspector of Factories • Paper-I
For an insulating materials, dielectric strength and dielectric loss should be respectively -
A)
High and high
B)
Low and high
C)
High and low
D)
Low and low
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'Low and high' (Option B).
Inspector of Factories • Paper-I
A moving iron instrument can be used for -
A)
D.C. only
B)
A.C only
C)
both D.C. and A.C.
D)
none of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'both D.C. and A.C.' (Option C).
Inspector of Factories • Paper-I
A 150 mA meter has accuracy of 52%. Its accuracy while 75 mA will be -
A)
5 1%
B)
5 2%
C)
5 4%
D)
520%
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '5 4%' (Option C).
Inspector of Factories • Paper-I
In an Anderson bridge, the unknown inductance is measured in terms of -
A)
known inductance and resistane
B)
known capacitance and resistance
C)
known resistance
D)
known inductance
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'known inductance' (Option D).
Inspector of Factories • Paper-I
With an increase in temperature, the Fermi level in an intrinsic semiconductor -
A)
Moves closer to the conduction band edge
B)
Moves closer to the valence band edge
C)
Moves into the conduction band
D)
Remains at the centre of the forbidden gap
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Moves closer to the conduction band edge' (Option A).
Inspector of Factories • Paper-I
Torque/weight ratio of an instrument indicates -
A)
selectivity
B)
Accuracy
C)
Fidelity
D)
Sensitivity
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'selectivity' (Option A).
Inspector of Factories • Paper-I
The condition for the electrical symmetry in the network is -
A)
h12 = - h21
B)
AD – BC = 1
C)
Z12 = Z21
D)
A = D
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'AD – BC = 1' (Option B).
Inspector of Factories • Paper-I
When network are connected in series, it is convenient to use -
A)
Z-parameter
B)
Y-parameter
C)
h-parameter
D)
g-parameter
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'g-parameter' (Option D).
Inspector of Factories • Paper-I
A potentiometer works on -
A)
heating effect
B)
magnetic effect
C)
electromagnetic induction
D)
none of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'electromagnetic induction' (Option C).
Inspector of Factories • 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 'High permeability and high dielectric loss' (Option D).
