Question is ⇒ Kelvin's double bridge is used to measure low resistances because, Options are ⇒ (A) it has high sensitivity, (B) there is no thermoelectric emf, (C) resistance variation due to temperature, (D) effect of contact and lead resistances is eliminated, (E) , Leave your comments or Download question paper.

Question is ⇒ Kelvin's double bridge is used to measure low resistances because, Options are ⇒ (A) it has high sensitivity, (B) there is no thermoelectric emf, (C) resistance variation due to temperature, (D) effect of contact and lead resistances is eliminated, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Kelvin's double bridge is used to measure low resistances because
A.	it has high sensitivity [Wrong Answer]
B.	there is no thermoelectric emf [Wrong Answer]
C.	resistance variation due to temperature [Wrong Answer]
D.	effect of contact and lead resistances is eliminated [Correct Answer]
View Answer 4 -2 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 :

⇒ The response of a thermistor overs the whole of its temperatures range is
linear
non-linear
almost linear
either (a) or (c)

⇒ In a hot wire instrument, the deflection is proportional to
peak value of ac current
average value of ac current
rms value of ac current
either (a) or (b)

⇒ Force = Electric intensity x current.
TRUE
FALSE

⇒ Paper capacitors are used in power supplies for filtering.
TRUE
FALSE

⇒ An RLC series circuit has a variable inductance. The value of L for resonance conditions at fundamental frequency is 0.18 H. For resonance conditions at third harmonic frequency the value of inductance is
0.54 H
0.06 H
0.02 H
1.62 H

⇒ Long distance short-wave radio broadcasting uses
ground wave
ionospheric wave
direct wave
any of the above

⇒ In the television system in India, each channel is allowed a bandwidth of
20 MHz
12 MHz
7 MHz
3 MHz

⇒ A 16:1 multiplexer has 4 select input lines.
TRUE
FALSE

⇒ The parameter β of a BJT change by 300%. If self bias is used in the amplifier using this BJT, the quiescent value of I_C and V_CE remain almost the same.
TRUE
FALSE

⇒ For a NAND SR latch of input is the normal resting state of inputs is
S = R = 1
S = 0, R = 1
S = 1, R = 0
S = R = 0

⇒ The frequency range of 300 kHz to 3000 kHz is known as
low frequency
medium frequency
high frequency
very high frequency

⇒ In a bipolar transistor, the emitter base junction has
forward bias
reverse bias
zero bias
zero or reverse bias

⇒ Class C operation finds application in
RF power amplifiers
frequency multipliers
both (a) and (b)
neither (a) nor (b)

⇒ The chip 8257 is a
programmable interrupt controller
programmable DMA controller
programmable peripheral interface
none of the above

⇒ The organisatioion of Intel memory chip 127256 is
32 K x 8
16 K x 8
32 K x 4
16 K x 4

⇒ The advantage of semiconductor strain gauge over resistance strain gauge is
it is more sensitve
it is more linear
it is less temperature dependent
it is cheaper

⇒ Read the following statements about address space in microprocessors

An address space is a set of all possible addresses which can be generated by a microprocessor.
Each address in the address space allows a designer to provide at least one memory or I/O location in the system.
Two types of address spaces are memory and I/O address space.
Some micro processors have only one type of address space.

Which of the above are correct?
All
1, 2, 3 only
1, 2, 4 only
1, 3, 4 only

⇒ Electrons within a metal have energy levels from zero to Fermi level E_F.
TRUE
FALSE

⇒ In an R-S latch, race condition occurs when
R is low and S is high
R and S are high
R and S are low
R is high and S is low

⇒ If f_h(t) is the Hilbert transform of f(t), and f(t) is a real valued signal, the pre-envelope of f(t) is
f(t) - jf_h(t)
f(t) + jf_h(t)
f_h(t) + jf(t)
f_h(t) - jf(t)

⇒ Ionospheric storm causes an abnormal decrease in the critical frequency.
TRUE
FALSE

⇒ Figure repres
Adder
Multiplier
Subtractor
Log Amplifier

⇒ Four terminal approach is used in measuring low resistance because it
eliminates thermoelectric energy
eliminates stray capacitance
eliminates stray inductance
eliminates the effect of leads and contacts

⇒ In a conventional AM superhetrodyne receivers, the detectors employed to extract intelligence include
Peak detectors
Ratio detectors
PLL
Slope detectors

⇒ If each branch of a Delta circuit has impedance 3 Z then each branch of the equivalent Y circuit has impedance.
Z/3
3 Z
3/3 Z
Z/3

⇒ Iron has a body centred cubic structure.
TRUE
FALSE

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

⇒ Performance of a PIN diode switch is represented by
insertion loss when switch is off
insertion loss when switch is on
insertion loss when switch is on and isolation loss when switch is off
insertion loss when switch is off and isolation loss when switch is on

⇒ It is desired to reduce distortion in an amplifier from 8% to 2% by using 5% negative feedback. The open and closed loop gains respectively are
60 and 15
15 and 60
6 and 1.5
1.5 and 6

⇒

Assertion (A): Each memory chip has its own address latch.

Reason (R): ALE signal comes out of microprocessor 8085 and goes to memory chip.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct R is wrong
A is wrong R is correct