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DC voltage of the order of a few mV can be accurately of measured by | |
A. | PMMC voltmeters [Wrong Answer] |
B. | moving iron voltmeter [Wrong Answer] |
C. | null balancing potentiometer [Correct Answer] |
D. | electrostatic voltmeter [Wrong Answer] |
View Answer
Explanation:-
Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ In a negative feedback amplifier A = 100, β = 0.04 and V_{s} = 50 mV, then feedback will be
4
8
10
2
⇒ The h parameter equivalent to ac resistance r_{e} is
h_{ib}
h_{fe}
h_{ob}
h_{rb}
⇒ In a driving point function poles and zeros must be conjugate if complex or imaginary.
TRUE
FALSE
⇒ The current in a circuit with 10 Ω resistance is i = 3 + 4 sin (100 t + 45°) + 4 sin (300 t + 60°) A. The rms current and power dissipated are
41 A and 410 W
35 A and 350 W
5 A and 250 W
11 A and 1210 W
⇒ An op-amp integrating circuit uses
an inductor
a capacitor
both inductor and capacitor
none of the above
⇒ An S/N ratio of 3 expressed in db is
4.8 dB
2.4 dB
0.48 dB
0.24 dB
⇒ In the graphical analysis of CE amplifier circuit, the upper end of load line is called
saturation point
cut off point
Q point
none of the above
⇒ When a UJT is used as a relaxation oscillator the current should be
less than I_{p}
more than I_{v}
more than I_{p} but less than I_{v}
negative
⇒
A-1, B-1, C-2, D-3
A-1, B-2, C-2, D-3
A-2, B-2, C-3, D-3
A-3, B-1, C-2, D-2
⇒ In CC configuration, the output signals has approximately
the same amplitude and phase
opposite amplitude and phase
same amplitude but opposite phase
none of the above
⇒ If Laplace transform of f(t) is F(s), then £ f(t - a) u (t - a)= 0
e^{as} F(s)
e^{-as} F(s)
- e^{as} F(s)
- e ^{-as} F(s)
⇒ Short circuited stubs are preferred to O.C stubs because
O.C stubs are incapable of giving full range of reactances
O.C stubs are liable to radiate
O.C stubs are difficult to make and connect
none of the above
⇒ In a series regulated power supply circuit the voltage gain of pass transistor satisfies the condition
A_{v} → ∞
1 << A_{v} → ∞
A_{v} ≈ 1
A_{v} << 1
⇒ A NOR gate is a combination of
OR gate and AND gate
AND gate and NOT gate
OR gate and NOT gate
two NOT gates
⇒ Which class of amplifiers operates with least distortion?
Class A
Class B
Class C
Class AB
⇒ The atomic weight of an atom is determined by
the number of protons
the number of neutrons
the number of protons and neutrons
the number of electrons and protons
⇒ Which of the following is NOT associated with a p-n junction?
Junction capacitance
Charge Storage Capacitance
Depletion Capacitance
Channel Length Modulation
⇒ D-layer extends approximately from
50 to 90 km
20 to 50 km
90 to 110 km
up to 50 km
⇒ The subtraction of a binary number Y from another binary number X, done by adding the 2's complement of Y to X results in a binary number without overflow. This implies that the result is
-ve and is in normal form
-ve and 2's complement form
+ve and is in normal form
+ve and in 2's complement
⇒ Satellite launch sites are invariably located on Eastern seaboards to ensure that
launch takes place eastward
expenditure of propulsion fuel is reduced during plane changing
the satellite achieves circular orbit quickly
spent rocket motor and other launcher debris falls into the sea
⇒ Two resistances R_{1} = 18.7 Ω. and R_{2} = 3.624 Ω in series. The total resistance to the appropriate number of significant figures is
22.324 Ω
22.32 Ω
22.3 Ω
22 Ω
⇒ For an n-channel enhancement type MOSFET, if the source is connected at a higher potential than that of the bulk (V_{SB} > 0), the threshold voltage V_{T} of the MOSFET will
remain unchanged
decrease
change Polarity
increase
⇒ In figure, I_{D} = 4 mA. Then V_{DS20 V16 V4 V0.4 V}
⇒ When a binary adder is used as BCD adder, the sum is
correct when it is < 9
correct when it is > 9
correct when it is < 16
none of these
⇒ The maximum concentration of the element which can be dissolved in solid silicon at a given temperature is termed as
Solid solubility
Dissolution coefficient
Solidification index
Concentration index
⇒ A shift register can be used for all of the following EXCEPT
ring counter
A/D conversion
series to parallel conversion
generation of delay
⇒ Which of these has highly doped p and n region?
PIN diode
Tunnel diode
Schottky diode
Photodiode
⇒ The Fourier transform of f(t) = cos ω_{0}t is
p[δω_{0} + δ(- ω_{0})]
p[δ(ω - ω_{0}) + δ(ω + ω_{0})]
p[δω_{0} - δ(- ω_{0})]
p[δ(ω - ω_{0}) - δ(ω + ω_{0})]
⇒ In asynchronous TDM, for n signal sources, each frame contains m slots, where m is usually
Less than n
2n
n
greater than 2n
⇒ Which one of the following statements is not a property of RL driving point impedance?
The first critical frequency at the origin is a zero
The last critical frequency is a pole
The impedance at S = ∞ always less than the impedance at S = zero
The slope of the impedance curve is positive at all points
⇒ In a negative feedback amplifier A = 100, β = 0.04 and V_{s} = 50 mV, then feedback will be
4
8
10
2
⇒ The h parameter equivalent to ac resistance r_{e} is
h_{ib}
h_{fe}
h_{ob}
h_{rb}
⇒ In a driving point function poles and zeros must be conjugate if complex or imaginary.
TRUE
FALSE
⇒ The current in a circuit with 10 Ω resistance is i = 3 + 4 sin (100 t + 45°) + 4 sin (300 t + 60°) A. The rms current and power dissipated are
41 A and 410 W
35 A and 350 W
5 A and 250 W
11 A and 1210 W
⇒ An op-amp integrating circuit uses
an inductor
a capacitor
both inductor and capacitor
none of the above
⇒ An S/N ratio of 3 expressed in db is
4.8 dB
2.4 dB
0.48 dB
0.24 dB
⇒ In the graphical analysis of CE amplifier circuit, the upper end of load line is called
saturation point
cut off point
Q point
none of the above
⇒ When a UJT is used as a relaxation oscillator the current should be
less than I_{p}
more than I_{v}
more than I_{p} but less than I_{v}
negative
⇒
Match the following:
List I (Transmission system) | List II (Mode) | ||
---|---|---|---|
A. | Rectangular waveguide | 1. | TE/TM |
B. | Circular waveguide | 2. | TEM |
C. | Coaxial line | 3. | Quasi TEM |
D. | Microstrip line |
A-1, B-1, C-2, D-3
A-1, B-2, C-2, D-3
A-2, B-2, C-3, D-3
A-3, B-1, C-2, D-2
⇒ In CC configuration, the output signals has approximately
the same amplitude and phase
opposite amplitude and phase
same amplitude but opposite phase
none of the above
⇒ If Laplace transform of f(t) is F(s), then £ f(t - a) u (t - a)= 0
e^{as} F(s)
e^{-as} F(s)
- e^{as} F(s)
- e ^{-as} F(s)
⇒ Short circuited stubs are preferred to O.C stubs because
O.C stubs are incapable of giving full range of reactances
O.C stubs are liable to radiate
O.C stubs are difficult to make and connect
none of the above
⇒ In a series regulated power supply circuit the voltage gain of pass transistor satisfies the condition
A_{v} → ∞
1 << A_{v} → ∞
A_{v} ≈ 1
A_{v} << 1
⇒ A NOR gate is a combination of
OR gate and AND gate
AND gate and NOT gate
OR gate and NOT gate
two NOT gates
⇒ Which class of amplifiers operates with least distortion?
Class A
Class B
Class C
Class AB
⇒ The atomic weight of an atom is determined by
the number of protons
the number of neutrons
the number of protons and neutrons
the number of electrons and protons
⇒ Which of the following is NOT associated with a p-n junction?
Junction capacitance
Charge Storage Capacitance
Depletion Capacitance
Channel Length Modulation
⇒ D-layer extends approximately from
50 to 90 km
20 to 50 km
90 to 110 km
up to 50 km
⇒ The subtraction of a binary number Y from another binary number X, done by adding the 2's complement of Y to X results in a binary number without overflow. This implies that the result is
-ve and is in normal form
-ve and 2's complement form
+ve and is in normal form
+ve and in 2's complement
⇒ Satellite launch sites are invariably located on Eastern seaboards to ensure that
launch takes place eastward
expenditure of propulsion fuel is reduced during plane changing
the satellite achieves circular orbit quickly
spent rocket motor and other launcher debris falls into the sea
⇒ Two resistances R_{1} = 18.7 Ω. and R_{2} = 3.624 Ω in series. The total resistance to the appropriate number of significant figures is
22.324 Ω
22.32 Ω
22.3 Ω
22 Ω
⇒ For an n-channel enhancement type MOSFET, if the source is connected at a higher potential than that of the bulk (V_{SB} > 0), the threshold voltage V_{T} of the MOSFET will
remain unchanged
decrease
change Polarity
increase
⇒ In figure, I_{D} = 4 mA. Then V_{DS20 V16 V4 V0.4 V}
⇒ When a binary adder is used as BCD adder, the sum is
correct when it is < 9
correct when it is > 9
correct when it is < 16
none of these
⇒ The maximum concentration of the element which can be dissolved in solid silicon at a given temperature is termed as
Solid solubility
Dissolution coefficient
Solidification index
Concentration index
⇒ A shift register can be used for all of the following EXCEPT
ring counter
A/D conversion
series to parallel conversion
generation of delay
⇒ Which of these has highly doped p and n region?
PIN diode
Tunnel diode
Schottky diode
Photodiode
⇒ The Fourier transform of f(t) = cos ω_{0}t is
p[δω_{0} + δ(- ω_{0})]
p[δ(ω - ω_{0}) + δ(ω + ω_{0})]
p[δω_{0} - δ(- ω_{0})]
p[δ(ω - ω_{0}) - δ(ω + ω_{0})]
⇒ In asynchronous TDM, for n signal sources, each frame contains m slots, where m is usually
Less than n
2n
n
greater than 2n
⇒ Which one of the following statements is not a property of RL driving point impedance?
The first critical frequency at the origin is a zero
The last critical frequency is a pole
The impedance at S = ∞ always less than the impedance at S = zero
The slope of the impedance curve is positive at all points