Question is ⇒ The hot resistance of a tungsten lame is about 12 times its cold resistance. Accordingly, the cold resistance of a 60 Ω, 120 V lamp is about __________ ohm., Options are ⇒ (A) 5, (B) 240, (C) 2, (D) 2880, (E) , Leave your comments or Download question paper.

Question is ⇒ The hot resistance of a tungsten lame is about 12 times its cold resistance. Accordingly, the cold resistance of a 60 Ω, 120 V lamp is about __________ ohm., Options are ⇒ (A) 5, (B) 240, (C) 2, (D) 2880, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The hot resistance of a tungsten lame is about 12 times its cold resistance. Accordingly, the cold resistance of a 60 Ω, 120 V lamp is about __________ ohm.
A.	5 [Wrong Answer]
B.	240 [Wrong Answer]
C.	2 [Correct Answer]
D.	2880 [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 :

⇒ In a CE amplifier circuit the ac voltage between emitter and ground
is very high
may be high or low
is zero
depends on circuit configuration

⇒ Decimal 18.29 when converted int 10's complement will become
81.7707
81.7
81.777
81.077

⇒ Which device changes parallel data to serial data?
Decoder
Multiplexer
Demultiplexer
Flip flop

⇒ Which of the following devices uses a slow wave structure?
Klystron two cavity amplifier
Klystron multicavity amplifier
Reflex klystron oscillator
TWT

⇒ Form factor for a sine wave is
1.414
0.707
1.11
0.637

⇒ Which of the following integer expressions is correct in Pascal?
- A + B + M
A div B * mod C
A - 4.0
A / B + D

⇒ The closing of switch S₁ and S₂ in figure will ligh
lamp L₁ only
lamps L₁ and L₂
none of them
lamp L₂ only

⇒ For the discrete time system of the given fig
y_k - 0.5 y_k_{- 1} - 0.25 y_k_{- 2} = u_k
y_k + 0.5 y_k_{- 1} - 0.25 y_k_{- 2} = u_k
y_k - 0.5 y_k_{- 1} + 0.25 y_k_{- 2} = u_k
y_k + 0.5 y_k_{- 1} + 0.25 y_k_{- 2} = u_k

⇒ The current I_CBO flows in
base and emitter leads
base and collector leads
collector and emitter leads
collector, emitter and base leads

⇒ Which addressing mode is suitable only for these instructions in which there is only one operand?
Implicit
Register
Direct
Immediate

⇒ A reactance function is always a quotient of
even to odd polynomials
odd to even polynomials
even to odd or odd to even polynomials
even to even polynomials

⇒ The 6 V zener diode shown in figure has zero zener resistance and a knee current of 5 mA. The minimum value of R, so that the voltage across it does not fall below 6
1.2 kΩ
80 Ω
50 W
0

⇒ To convert SR latch to D latch
connect both S and R to D
connect D to S directly and D to R through inverter
connect D to R directly and D to S through inverter
connect S to D and leave R open

⇒ In a bipolar transistor which current is largest
collector current
base current
emitter current
base current or emitter current

⇒ The oscillator shown in figure
Colpitt's oscillator
Hartley oscillator
Tuned emitter oscillator
Clapp oscillator

⇒ If antenna diameter is increased four times, the maximum range is increased by a factor of
2
2
4
0.2

⇒ The real part of complex dielectric constant and tanδ for a dielectric are 2.1 and 5 x 10^-4 at 100 Hz respectively. The imaginary part of dielectric constant at 100 Hz is
1.05 x 10^-3
2.1 x 10^-3
5 x 10^-3
1.05 x 10^-2

⇒ Choose the correct option, if b (branch), n (nodes), l (links)
b = n + l - 1
no. of twig = n - 1
b = n - l + 1
b, a

⇒ The radiation resistance of a doublet antenna of length dl is proportional to
δ l
(δ l)²
(δ l)³
(δ l)⁰⁵

⇒ State variable formulation is very suitable for computer solution.
TRUE
FALSE

⇒ A cascade amplifier stage is equivalent to
common emitter stage followed by a common base stage
common base stage followed by an emitter follower
an emitter follower stage followed by a common base stage
a common base stage followed by a common emitter stage

⇒ A + A . B =
B
A . B
A
A or B

⇒ A coil of resistance R and inductance L is connected in series with 5 μF capacitor. The source frequency is equal to resonance frequency and circuit current is 0.5 A. Another 5 F capacitor is connected in parallel with the above capacitor. The circuit current will be
0.5 A
more than 0.5 A
less than 0.5 A
0.5 A or less

⇒ A 0-200 V voltmeter has a sensitivity of 1 kΩ per volt. The resistance of voltmeter is
1 kΩ
200 kΩ
100 kΩ
50 kΩ

⇒ In the network of the figure is the maximum power is delivered to RL if its valu
16 Ω
40/3 Ω
60 Ω
20 Ω

⇒ For 8 bit representation the minimum positive and minimum negative numbers are
2^-128 each
2^-28 and 2^-127
2^-127 and 2^-128
2^-127each

⇒ For an P-channel enhancement type MOSFET determine the drain current if K = 0.278 x 10^-3A/V², V_GS = -4V, V_T = -2V, Voltage equivalent at 27°C = 26 mV.
10 mA
1.11 mA
0.751 mA
46.98 mA

⇒ A Darlington pair consist of
two CB amplifiers
two CC amplifiers
two cascaded CC amplifiers
two cascaded CE amplifiers

⇒ Polarization is a measure of
dielectric constant per unit volume
voltage gradient to produce electrical breakdown
product of charge and distance
excess charge density

⇒ Wagner earthing device is used to eliminate error due to
electromagnetic coupling
electrostatic coupling
both electrostatic and electromagnetic coupling
either (a) or (b)