Question is ⇒ A permeable substance is one, Options are ⇒ (A) which is strong magnet, (B) which is a weak magnet, (C) which is a good conductor, (D) through which magnetic lines of force can pass easily, (E) , Leave your comments or Download question paper.

Question is ⇒ A permeable substance is one, Options are ⇒ (A) which is strong magnet, (B) which is a weak magnet, (C) which is a good conductor, (D) through which magnetic lines of force can pass easily, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A permeable substance is one
A.	which is strong magnet [Wrong Answer]
B.	which is a weak magnet [Wrong Answer]
C.	which is a good conductor [Wrong Answer]
D.	through which magnetic lines of force can pass easily [Correct Answer]
View Answer 1 -1 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

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⇒

Match the following:

	List I (Types of N-bit ADC)		List II (Characteristics)
A.	Flash converter	1.	Integrating Type
B.	Successive	2.	Fastest converter approximation
C.	Counter ramp	3.	Maximum conversion time = N bits
D.	Dual slow	4.	Used a DAC in its feedback path

A-2, B-3, C-4, D-1
A-1, B-3, C-4, D-2
A-2, B-4, C-3, D-1
A-1, B-4, C-3, D-2

⇒ In a loss line R_L < Z₀, then
Reflection coefficient is zero
Reflection coefficient is ∞
Reflection coefficient is negative
Reflection coefficient is positive

⇒ Maximum efficiency of class B power amplifier is 50%.
TRUE
FALSE

⇒ Consider the following statements

The effect of feedback is to reduce system error
Feedback increases the system gain at one frequency but reduces the system gain as another frequency
Feedback can cause an originally stable system to become unstable

Which of the above statements are correct?
1, 2, 3
1, 2
2, 3
1, 3

⇒ The distance between target and radar is reduced to half. Power received increases by
42751
42739
4 times
16 times

⇒

Assertion (A): De sauty's bridge is suitable only for pure capacitor.

Reason (R): Capacitors are mostly perfect.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true

⇒ FM receivers using the standard 88 to 108 MHz band use IF of
8 MHz
9.9 MHz
10.7 MHz
12.2 MHz

⇒ The self inductances of two coils are 27 H and 3 H. If the winding or coils is such that 50% of flux of one links the other, the mutual inductance is
30 H
24 H
9 H
4.5 H

⇒ In standard TTL, the 'totem pole' stage refers to
the multi-emitter I/P stage
phase splitter
the O/P buffer
open collector O/P stage

⇒ Consider the following statements relating to synchros

Rotor of control transformer is either disc shaped or umbrella shaped
Rotor of transmitter has low magnetic reluctance
Transmitter and control transformer pair act as error detector

Out of above the correct statements are
1, 2, 3
1 and 2
2 and 3
1 and 3

⇒ From the given circuit below, we can conclude t
BJT is pnp
BJT is npn
transistor is faulty
not possible to determined

⇒ At FM demodulator output noise power density
increases with frequency
decreases with frequency
remains unaltered
none of the above

⇒ The total number of leads in reverse conducting thyristor is
2
3
1
4

⇒ Antenna radiation efficiency can be increased by
reducing radiation resistance of the system
increasing radiation resistance of the system
providing effective earthing
any of the above

⇒ An antenna has 40 Ω resistance and 60 Ω radiation resistance. The efficiency of the antenna is
0.3
0.4
0.5
0.6

⇒ In a circular waveguide TE₂₁ mode has lowest cutoff frequency
TRUE
FALSE

⇒ In the above case if the modulating frequency is increased to 20 kHz the bandwidth will be
0.05 MHz
1 MHz
2 MHz
4 MHz

⇒ In crystalline solids, atoms are stacked in a regular manner.
TRUE
FALSE

⇒ In the given figure shows a 3 bit shift register using TTL flip flops. Initially all the flip flops are set to 0 state. After 8 clock pul
A = 1, B = 1, C = 1
A = 1, B = 1, C = 0
A = 0, B = 1, C = 1
A = 0, B = 0, C = 1

⇒ The loss of charge method can be used to measure
resistance of shunt
insulation resistance of cable
resistance of shunt winding
both (b) and (c)

⇒ Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called
Debye temperature
Curie temperature
Neel temperature
Transition temperature

⇒ For parallel RLC circuit, which one of the following statements is NOT correct?
The bandwidth of the circuit deceases if R is increased
The bandwidth of the circuit remains same if L is increased
At resonance, input impedance is a real quantity
At resonance, the magnitude of input impedance attains its minimum value

⇒ A logical expression Y = A + AB is equal to
Y = AB
Y = AB
Y = A + B
Y = A + B

⇒ A junction Field Effect Transistor can operate in
depletion mode only
enhancement mode only
depletion and enhancement modes
neither depletion nor enhancement modes

⇒ For measuring current at a high frequency we should use
moving iron instrument
electrostatic instrument
thermocouple instrument
moving coil instrument

⇒ A magic tee is to be used as CW duplexer. Then port 1, port 2, port 3 (E arm), port 4 (H arm) respectively should be connected to
matched load, antenna, receiver and CW transmitter
CW transmitter, antenna, receiver and matched load
CW transmitter, receiver, antenna and matched load
CW transmitter, matched load, receiver and antenna

⇒ In rectifier circuits, the rms value of ac component of output voltage is equal to
V_rms
0.5 V_rms
(V_rms - V_dc)^0.5
(V_rms² - V_dc²)^0.5

⇒ If Y(s) = 1 + s, the network has
1 Ω resistor and 1 F capacitor in series
1 Ω resistor and 1 F capacitor in parallel
1 Ω resistor and 1 H inductor in series
1 Ω resistor and 1 H inductor in parallel

⇒ For the circuit shown in the figure, the current
indeterminate due to indeterminate data
zero
4 Amp
8 Amp

⇒ The impedance of an RC series circuit is 12 Ω at f= 50 Hz. At f= 200 Hz, the impedance will be
more than 12
less than 3
more than 3 Ω but less than 12 Ω
more than 12 Ω but less than 24 Ω