Question is ⇒ Two coupled coils have self inductance L1 and L2. The coefficients of coupling is k. The mutual inductance is, Options are ⇒ (A) k L1L2, (B) k2L1L2, (C) kL1L2, (D) kL1L2, (E) , Leave your comments or Download question paper.

Question is ⇒ Two coupled coils have self inductance L1 and L2. The coefficients of coupling is k. The mutual inductance is, Options are ⇒ (A) k L1L2, (B) k2L1L2, (C) kL1L2, (D) kL1L2, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Two coupled coils have self inductance L₁ and L₂. The coefficients of coupling is k. The mutual inductance is
A.	k L₁L₂ [Wrong Answer]
B.	k²L₁L₂ [Wrong Answer]
C.	kL₁L₂ [Correct Answer]
D.	kL₁L₂ [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : C 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 :

⇒ A variable resistance R and capacitive reactance X_C are connected in series. As R is varied, the locus of Z is
a straight line parallel to Y axis in 4th quadrant
a straight line parallel to X axis in 4th quadrant
a straight line parallel to Y axis in second quadrant
a straight line parallel to Y axis in first quadrant

⇒ The resolution of a DAC depends on which of the following?
The number of bits
Monotonicity
Reference voltage
The values of resistance

⇒ A high pulse repetition frequency in a radar
increases the maximum range
decreases the maximum range
has no effect on the maximum range
either (a) or (b) depending on other factors

⇒ Higher value of ripple factor indicates
poor rectification
ideal rectification
r.m.s. value to peak value
none of the above

⇒

Assertion (A): The horizontal intercept of dc load line is the same as ideal cut off point

Reason (R): When a transistor is in cut off region, collector current is zero

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

⇒ Hall effect is observed in a specimen (metal or semi- conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
normal to both current and magnetic field
in the same direction as current
in a direction anti parallel to magnetic field
none of the above

⇒ In a gate output is Low if and only if all inputs are High. The gate is
OR
AND
NOR
NAND

⇒ Schering bridge operates at a high voltage of about 10 kV.
TRUE
FALSE

⇒ Figure sho
JFET
n-channel MOSFET
p-channel MOSFET
none of the above

⇒ A linear diode detector uses RC filter. As modulation index increases the maximum permissible value of time constant RC
increases
decreases
remains constant
either (a) or (c)

⇒ Thyristors can be used for control of
dc separately excited motor
dc shunt motor
dc series motor
all of the above

⇒ Consider the directive T : DS105. This directive
directs the assembler to reserve a sequence of 105 bytes in the memory
directs the assembler to reserve a sequence of 105 bits in the memory
directs the assembler to reserve a sequence of consecutive 105 bytes in the memory
directs the assembler to reserve a sequence of consecutive 105 bits in the memory

⇒ Which of the following instructions have only one operand?
Multiply
Add
Shift
Subtract

⇒ Which one of following is correct condition to check the stability of sysytem in terms of impulse response?
Σ(x(n)) < ∞
Σx(n) < 0
Σx(n) = 0
Σx(n) = ∞

⇒ In CE approximately, the active region is where the collector curves are
almost horizontal
almost vertical
inclined at 45°
inclined at 60°

⇒ In hexadecimal number system, A is equal to decimal number
10
11
17
18

⇒ In the given figure, if R = X_C, voltage gai
0 dB
3 dB
-3 dB
20 dB

⇒ The number of computer viruses is some thousands.
TRUE
FALSE

⇒ In rectifier circuits, ripple factor RF and form factor FF are related as
RF = (FF² - 1)^0.5
RF = FF
RF = FF - 1
RF = (FF - 1)^0.5

⇒ 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

⇒ For an insulating material, dielectric strength and dielectric loss should be respectively
high and high
low and high
high and low
low and low

⇒ In a linear op-amp circuit
the product of gain and bandwidth is constant
input can be dc only
input can be ac only
saturation may occur

⇒ The number of programmable 16 bit registers of 6800 are
2
3
4
5

⇒ A certain transistor has a_dc of 0.98 and a collectors leakage current of 5 μA. If I_E = 1 mA, the collector current will be
1.005 mA
0.985 mA
0.975 mA
0.955 mA

⇒ A signal is sampled at 8 kHz and is quantized using 8 bit uniform quantizer. Assuming SNR_q for a sinusoidal signal, the correct statement for PCM signal with a bit rate of R is
R = 32 KbPs, SNR_q = 25.8 dB
R = 64 KbPs, SNR_q = 49.8 dB
R = 64 KbPs, SNR_q = 58.8 dB
R = 32 KbPs, SNR_q = 49.8 dB

⇒ In the given figure, the combinations of two non touching loop
1
2
3
4

⇒ 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

⇒ Which of the following circuit would be preferred for a 355 KHz IF amplifier?
Resistance loaded
Double tuned transformer
Video amplifier
Class C

⇒ In each of circuits below, indicate which diode is conduct
Figure A
Figure B
Figure C
All the three

⇒ Pico-farad is equal to
10^-6 farad
10^-12 farad
10^-3 farad
10^-9 farad