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A current tracer responds to | |
A. | steady current only [Wrong Answer] |
B. | pulsating current only [Correct Answer] |
C. | both pulsating and steady current [Wrong Answer] |
D. | none of the above [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ The dynamic resistance of a forward biased p-n diode
varies inversely with current
varies directly with current
is constant
is either constant or varies directly with current
⇒ Consider the following statements about hybrid ring
1, 2, 3 and 4
1, 3 and 4
1 and 2
2, 3 and 4
⇒ The circuit in figure will act as ideal current source with respect to terminals A and B when frequenc
0
1 rad/sec
4 rad/sec
16 rad/sec
⇒ A signal m(t) with bandwidth 500 Hz is first multiplied by a signal g(t) w
δ(t)
m(t)
0
m(t) δ(t)
⇒ Vividh Bharti programme is transmitted in
short wave
medium frequency
very high frequency
none of the above
⇒ Microwaves are used for
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radio broadcast
TV systems
all of the above
⇒ A carrier is phase modulated (PM) with frequency deviation of 10 kHz by a single tone frequency of 1 kHz. If the single tone frequency is increased to 2 kHz, assuming that phase deviation remains unchanged, the bandwidth of the PM signal is
21 kHz
22 kHz
42 kHz
44 kHz
⇒ Commercial Frequency deviation of FM is
70 kHz
75 kHz
80 kHz
65 kHz
⇒
A-4, B-3, C-1, D-2
A-3, B-4, C-2, D-1
A-3, B-4, C-1, D-2
A-4, B-3, C-2, D-1
⇒ The value of parameter r_{e} used in r_{e} transistor model
increases with increase in temperature
decreases with increase in temperature
is not affected by increase in temperature
either (b) or (c)
⇒ In a single phase full wave ac regulator the rms value of load current is 20 A load is purely resistive. Then
average thyristor current will be less than 20 A but rms thyristor current will be more than 20 A
both the average and rms thyristor currents will be less than 20 A
both the average and rms thyristor currents will be more than 20 A
rms thyristor current will be 20 A and average thyristor current will be 10 A
⇒ In a low level AM system, the amplifier which follows the modulated stage must be the
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harmonic device
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⇒ A computer program is used to read N and compute N !. IF N = 6, the result will be
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⇒ A step voltage E is applied to an R-L series circuit. At t = 0, the current in the circuit is
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⇒ The total bandwidth needed for an AM signal at 55.25 MHz with 0.5 MHz video modulation is
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⇒ The ROC of sequence x[n] = (0.8)^{n} ∪[n] + (0.4)^{n} ∪[n]
|z| > 0.8
|z| > 0.4
0.4 < |z| < 0.8
|z| < 0.8
⇒ Terra-watt is equal to
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10^{6} W
10^{9} W
10^{12} W
⇒ What is the function of silicon dioxide layer in MOSFETS?
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⇒ A sample of N-type semiconductor has electron density of 6.25 x 10^{18}/cm^{3} at 300k. If the intrinsic concentration of carriers in this sample is 2.5 x 10^{13}/cm^{3} at this temperature the hole density works out to be
10^{6}/cm^{3}
10^{8}/cm^{3}
10^{10}/cm^{3}
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⇒ Bandwidth of an antenna is related with where Q is quality factor
Q ∝ B
Q ∝ 1/B
Q ∝ B^{2}
Q ∝ 1/B^{2}
⇒ For a symmetrical network
h_{11} = h_{22}
h_{12} = h_{21}
h_{11} h_{22} - h_{12} h_{21} = 0
h_{11} h_{22} - h_{12} h_{21} = 1
⇒ When a 1 V increase in gate voltage changes the drain current 10 mA in an FET, its g_{m} equals
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100 μμ
1000 μμ
10000 μμ
⇒ The holes diffuse from P-region to the N-region in a P-N junction diode because
there is greater concentration of holes in the P-region as compared to N-region
there is greater concentration of holes in the N-region as compared to P-region
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⇒ A resistor of 10 kΩ has an rms noise voltage of 1 mV under a certain set of conditions. A resistor of 20 kΩ under the same conditions will have an rms noise voltage of
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⇒ For a parallel two wire line with both conductors touching each other, the characteristic impedance is about
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200 Ω
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⇒ In FSK no synchronous carrier is needed at the receiver
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FALSE
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⇒ The total lumens emitted by a source of 1 candle are
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4 p
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⇒
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
⇒ For the network in figure, the correct loop equation for loop
-I_{1} + 4I_{2} + 11I_{3} = 0
I_{1} + 4I_{2} + 11I_{3} = 0
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I_{1} - 4I_{2} + 6I_{3} = 0
⇒ The function δ(t - b) is
an impulse function
a step function originating at t = b
an impulse function originating at t = b
none of the above
⇒ The dynamic resistance of a forward biased p-n diode
varies inversely with current
varies directly with current
is constant
is either constant or varies directly with current
⇒ Consider the following statements about hybrid ring
- Ports 1 and 2 are decoupled.
- Port 3 and 4 are coupled.
- A signal entering either port 1 or 2 splits equally between ports 3 and 4.
- A signal entering either port 3 or 4 splits equally between ports 1 and 2.
1, 2, 3 and 4
1, 3 and 4
1 and 2
2, 3 and 4
⇒ The circuit in figure will act as ideal current source with respect to terminals A and B when frequenc
0
1 rad/sec
4 rad/sec
16 rad/sec
⇒ A signal m(t) with bandwidth 500 Hz is first multiplied by a signal g(t) w
δ(t)
m(t)
0
m(t) δ(t)
⇒ Vividh Bharti programme is transmitted in
short wave
medium frequency
very high frequency
none of the above
⇒ Microwaves are used for
telephony
radio broadcast
TV systems
all of the above
⇒ A carrier is phase modulated (PM) with frequency deviation of 10 kHz by a single tone frequency of 1 kHz. If the single tone frequency is increased to 2 kHz, assuming that phase deviation remains unchanged, the bandwidth of the PM signal is
21 kHz
22 kHz
42 kHz
44 kHz
⇒ Commercial Frequency deviation of FM is
70 kHz
75 kHz
80 kHz
65 kHz
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | RC coupled amplifier | 1. | Very low drift |
B. | Tuned amplifier | 2. | Flat frequency response from zero frequency onwards |
C. | Chopper stabilized amplifier | 3. | Flat frequency response with upper and lower cut off frequency |
D. | DC amplifier | 4. | Peak in gain frequency response |
A-4, B-3, C-1, D-2
A-3, B-4, C-2, D-1
A-3, B-4, C-1, D-2
A-4, B-3, C-2, D-1
⇒ The value of parameter r_{e} used in r_{e} transistor model
increases with increase in temperature
decreases with increase in temperature
is not affected by increase in temperature
either (b) or (c)
⇒ In a single phase full wave ac regulator the rms value of load current is 20 A load is purely resistive. Then
average thyristor current will be less than 20 A but rms thyristor current will be more than 20 A
both the average and rms thyristor currents will be less than 20 A
both the average and rms thyristor currents will be more than 20 A
rms thyristor current will be 20 A and average thyristor current will be 10 A
⇒ In a low level AM system, the amplifier which follows the modulated stage must be the
linear device
harmonic device
class C amplifier
non-linear device
⇒ A computer program is used to read N and compute N !. IF N = 6, the result will be
6
12
720
1040
⇒ A step voltage E is applied to an R-L series circuit. At t = 0, the current in the circuit is
E/R
E/L
infinity
zero
⇒ The total bandwidth needed for an AM signal at 55.25 MHz with 0.5 MHz video modulation is
0.25 MHz
0.5 MHz
1 MHz
10 MHz
⇒ The ROC of sequence x[n] = (0.8)^{n} ∪[n] + (0.4)^{n} ∪[n]
|z| > 0.8
|z| > 0.4
0.4 < |z| < 0.8
|z| < 0.8
⇒ Terra-watt is equal to
10^{3} W
10^{6} W
10^{9} W
10^{12} W
⇒ What is the function of silicon dioxide layer in MOSFETS?
To provide high input resistance
To increase current carriers
To provide high output resistance
Both (a) and (c)
⇒ A sample of N-type semiconductor has electron density of 6.25 x 10^{18}/cm^{3} at 300k. If the intrinsic concentration of carriers in this sample is 2.5 x 10^{13}/cm^{3} at this temperature the hole density works out to be
10^{6}/cm^{3}
10^{8}/cm^{3}
10^{10}/cm^{3}
10^{l2}/cm^{3}
⇒ Bandwidth of an antenna is related with where Q is quality factor
Q ∝ B
Q ∝ 1/B
Q ∝ B^{2}
Q ∝ 1/B^{2}
⇒ For a symmetrical network
h_{11} = h_{22}
h_{12} = h_{21}
h_{11} h_{22} - h_{12} h_{21} = 0
h_{11} h_{22} - h_{12} h_{21} = 1
⇒ When a 1 V increase in gate voltage changes the drain current 10 mA in an FET, its g_{m} equals
10 μμ
100 μμ
1000 μμ
10000 μμ
⇒ The holes diffuse from P-region to the N-region in a P-N junction diode because
there is greater concentration of holes in the P-region as compared to N-region
there is greater concentration of holes in the N-region as compared to P-region
the free electrons in the N-region attract them
potential difference facilities such transfer
⇒ A resistor of 10 kΩ has an rms noise voltage of 1 mV under a certain set of conditions. A resistor of 20 kΩ under the same conditions will have an rms noise voltage of
1 mV
2 mV
1.414 mV
4 mV
⇒ For a parallel two wire line with both conductors touching each other, the characteristic impedance is about
300 Ω
200 Ω
80 Ω
24 Ω
⇒ In FSK no synchronous carrier is needed at the receiver
TRUE
FALSE
depend on distance
none
⇒ The total lumens emitted by a source of 1 candle are
0.4 p
4 p
2 p
8 p
⇒
Assertion (A): The response of a network to unit impulse can be obtained directly from the network function.
Reason (R): The response of a network for any input can be obtained from impulse response.
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
⇒ For the network in figure, the correct loop equation for loop
-I_{1} + 4I_{2} + 11I_{3} = 0
I_{1} + 4I_{2} + 11I_{3} = 0
-I_{1} - 4I_{2} + 11I_{3} = 0
I_{1} - 4I_{2} + 6I_{3} = 0
⇒ The function δ(t - b) is
an impulse function
a step function originating at t = b
an impulse function originating at t = b
none of the above