Question is ⇒ If the diameter of a wire is doubled, its current carrying capacity becomes, Options are ⇒ (A) one-fourth, (B) half, (C) twice, (D) four times, (E) , Leave your comments or Download question paper.

Question is ⇒ If the diameter of a wire is doubled, its current carrying capacity becomes, Options are ⇒ (A) one-fourth, (B) half, (C) twice, (D) four times, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	If the diameter of a wire is doubled, its current carrying capacity becomes
A.	one-fourth [Wrong Answer]
B.	half [Wrong Answer]
C.	twice [Wrong Answer]
D.	four times [Correct Answer]
View Answer 12 -4 Explanation:- Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Human body cannot sustain electric current beyond
1 μA
10 μA
5 μA
35 μA

⇒ Parallel wire transmission line is an example of
lumped network
distributed
depend upon I/P signal strength
power I/P

⇒ In FM and AM the ratio of signal to noise ratio at the detector output least depends upon
bandwidth
transmission
carrier frequency
modulating frequency

⇒ The range of visible light is
300 to 2000 Å
200 - 4000 Å
4000 to 7700 Å
more than 10000 Å

⇒ Which of the following method cannot be used to increase the bandwidth for cascaded RF amplifier stages?
Wave traps in each stage
Stagger tuning
A shunt damping resistor across each tuned circuit
Doubled tuned transformers with tighter coupling

⇒ In n-well CMOS fabrication substrate is:
heavily doped n-type
heavily doped p-type
lightly doped n-type
lightly doped p-type

⇒ What is the maximum output voltage from the 741 op-amp?
Zero
Approximately 1 V
Approximately 3 V
Approximately 5 V

⇒ In a circular waveguide with radius r, the dominant mode is
TM₀₁
TE₀₁
TM₁₁
TE₁₁

⇒ The time required for horizontal blanking is 16% of that for each horizontal line. If horizontal time is 63.5 μs, the horizontal blanking time for each line is about
1 μs
10 μs
100 μs
none of the above

⇒ A clipper
adds a dc component to the input signal
removes signal voltages above or below a specified value
both (a) and (b)
either (a) or (b)

⇒ The expression for satellite link frequencies such as 4/6 GHz denotes that
4 GHz is the up-link and 6 GHz is the down-link frequency
4 GHz is the down-link and 6 GHz is the up-link frequency
the system operates at a mean frequency of 5 GHz
one frequency is used as a back up for the other

⇒ The skip distance does not depends upon
the power transmitted
type of wave propagation
angle of beaming of the wave
frequency of the signal transmitted

⇒ A transmission line of characteristic impedance z₀ = 50 Ω. Phase Velocity = 2 x 10⁸ m/sec, and length l = 1 m is terminated by a load z₁ = (30 - j 40) ohms. The input impedance of the line for a frequency of 100 MHz will be
(30 + j x 40) Ω
(30 - j 40) Ω
(50 + j x 40) Ω
(50 - j 40) Ω

⇒ Nichrome is used for
overhead line wires
heater coils
lamp filaments
all of the above

⇒ Binary number 1101101101 is equal to decimal number
3289
2289
1289
289

⇒ Almost all high level languages have provision for logical operations.
TRUE
FALSE

⇒ The number of cells in a 4 variable K map is
16
8
4
32

⇒ A/D parallel converter is also called flash converter.
TRUE
FALSE

⇒ In what range should Re(s) remains so that Laplace transform of the function e^{(a + 2)t + 5} exists?
Re(s) > a + 2
Re(s) > a + 7
Re(s) < a
Re(s) > a + 5

⇒ A band elimination constant k filter has series resonant circuit in series arms.
TRUE
FALSE

⇒ In a series circuit with fixed R and variable X_L, the current locus lies in the fourth quadrant.
TRUE
FALSE

⇒ The RF section of a radio transmit generally consists of
master oscillator
final power amplifier to feed antenna
buffer stage
all of the above

⇒ In home tape recorders the tape width is 2 inches.
TRUE
FALSE

⇒ Which of the following is not an omnidirectional antenna?
Log periodic
Half-wave dipole
Discone
Marconi

⇒ In a single phase full wave ac regulator using two thyristors only, the gate circuits of the two thyristors
must be isolated
may or may not be isolated
should be preferably, isolated
should not be isolated

⇒ Ohmic range of metal film resistors is
1 to 100 ohms
10 to 1 K ohms
100 to 1 M ohms
100 to 100 M ohms

⇒ A certain JK FF has t_pd = 12 nsec. The largest MOD counter that can be constructed from these FFs and still operate up to 10 MHz is
any
8
256
10

⇒ In a three input AND gate A = 1, B = 1, C = 0 The output Y =
ABC
ABC
ABC
ABC

⇒ An insulator will conduct when the
voltage applied is more than the breakdown voltage
temperature is raised to very high level
either (a) or (b) above
none of the above

⇒ The merger of hole and free electron is called
covalent bonding
recombination
thermal energy
free electrons