Question is ⇒ The unit of thermal resistance of a semi-conductor device is, Options are ⇒ (A) Ohms, (B) Ohms/°C, (C) °C/ohm, (D) °C/watt, (E) , Leave your comments or Download question paper.

Question is ⇒ The unit of thermal resistance of a semi-conductor device is, Options are ⇒ (A) Ohms, (B) Ohms/°C, (C) °C/ohm, (D) °C/watt, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The unit of thermal resistance of a semi-conductor device is
A.	Ohms [Wrong Answer]
B.	Ohms/°C [Wrong Answer]
C.	°C/ohm [Wrong Answer]
D.	°C/watt [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

Previous question Next question

Also Read Similar Questions Below :

⇒ In 8085, F register has 8 bits.
TRUE
FALSE

⇒ A signal m(t) is multiplied by a sinusoidal waveform of frequency f_c such
0.5 M(f + f_c)
0.5 M(f - f_c)
0.5 M(f + f_c) + 0.5 M(f - f_c)
0.5 M(f - f_c) + 0.5 M(f - f_c)

⇒ Consider the following statements about an array in Pascal

An array has a fixed predetermined number of components.
Any component of an array can be accessed using an index.
An array variable name refers to a group of quantities by a single name.
When array variables are used an appropriate declaration is required.

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

⇒ A bipolar transistor is a __________ controlled devices whereas a FET is a __________ controlled devices.
current, voltage
current, current
voltage, current
voltage, voltage

⇒ A BJT is said to be operating in saturation region if
both junctions are reverse biased
both junctions are forward biased
base emitter junction is forward biased and base collector junction is reverse biased
base collector junction is forward biased and base emitter junction is reverse biased

⇒ In 2 out of 5 code, decimal number 8 is
11000
10100
11000
1010

⇒ Which of these is used in seven segment display?
PIN diode
LED
Photo diode
Tunnel diode

⇒ The circuit of the given figure
full adder
full subtractor
shift register
decade counter

⇒ The power to the base unit of a cordless telephone is supplied by
battery
AC mains
both battery and AC mains
either battery or AC mains

⇒ An R-C coupled amplifier has mid-frequency gain of 200 and a frequency response from 100 Hz to 20 kHz. A negative feedback network with β = 0.2 is incorporated into the amplifier circuit, the Bandwidth will be
50 kHz
20 kHz
100 kHz
infinite

⇒ A transistor with a = 0.98 then β will be
49
50
47
48

⇒ For the discrete time system of the given fig
y_k = 0.5 u_{k - 2} - u_k - 0.25 y_k - 1
y_k = 0.5 u_k_{- 1} - u_k - 0.25 y_k - 1
y_k = 0.5 u_k - u_k_{- 1} - 0.25 y_k - 1
y_k = 0.5 u_k_{- 1} - u_k_{- 1} - 0.25 y_k - 1

⇒ If the number of information bits is m, the number of parity bits p in the Hamming code is given by equation
2^p = m + p + 1
2^p ≥ m + p + 1
2^P = m + p
2^p ≥ m + p

⇒ If the iron core of a coil is removed so that it becomes an air cored coil, its inductance
will increase
will decrease
will remain the same
may increase or decrease

⇒ The rate at which information can be carried through a communication channel depends on
carrier frequency
bandwidth
transmission loss
transmitted power

⇒ In a full bridge circuit supplying an RLC under damped circuit
the waveshapes of output voltage and load current are square
the waveshapes of output voltage and load current are sinusoidal
the waveshapes of output voltage is square but the waveshape of load current is nearly sinusoidal
none of the above

⇒ A voltmeter using thermocouples measures
rms value
peak value
average value
peak to peak value

⇒ Find the value of K and velocity constant K_v so that the maximum overshoot in the unit step response is 0.2 and the peak time is 1
12.37, 0.175
12.86, 2.175
11.36, 1.175
1.86, 0.175

⇒ In position control system the device used for providing rate feedback voltage is
potentiometer
synchro-transmitter
synchro-transformer
tacho generator

⇒ If the ratio p(s)/q(s) represents a transfer function then
the degree of p(s) may be as small as zero, independent of degree of q(s)
the degree of p(s) and q(s) must be equal
the degrees of p(s) and q(s) must not be equal
the degrees p(s) and q(s) must differ by at least two

⇒ Ferrimagnetic materials have anti-parallel orientation of equal moments of permanent dipoles.
TRUE
FALSE

⇒ In a digital system there are three inputs ABC. Output should be high when atleast two inputs are high. Then output =
AB + BC + AC
ABC + ABC + A BC + ABC
AB + BC + AC
AB + BC + AC

⇒ A constant k band pass filter has a pass band from 100 to 400 Hz. The resonant frequency of series and shunt arms is
3000 Hz
2500 Hz
2000 Hz
1500 Hz

⇒

Assertion (A): The trigger circuit of a CRO is excited by the same signal as Y plates.

Reason (R): The time base generator develops a saw tooth voltage.

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

⇒ The dc output voltage from a power supply
increases with higher values of filter capacitance and decreases with more load current
decreases with higher values of filter capacitance and increases with more load current
decreases with higher values of filter capacitance as well as with more load current
increases with higher values of filter capacitance as well as with more load current

⇒ Access time of a storage is the time required
to write one word into the memory
to read one word from the memory
to write one word into and to read one word from the memory
either to write one word or to read one word

⇒

Match the following:

	List I		List II
A.	IF noise	1.	Ganged tuning
B.	Image frequency	2.	Spurious response
C.	Station selector	3.	Leaky filter capacitor
D.	Excessive Hum	4.	Mixer stage

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

⇒ Laplacian of a scalar function v is
gradient of v
divergence of v
gradient of the gradient of v
divergence of the gradient of v

⇒ If the p and T circuits in figure are equivalent, then R₁, R₂, R₃ respectively
9 Ω, 6 Ω, 6 Ω
6 Ω, 6 Ω, 9 Ω
9 Ω, 6 Ω, 9 Ω
6 Ω, 9 Ω, 6 Ω

⇒ If transfer function of a system is H(z) = 6 + z^-1 + z^-2 then system is
minimun phase
maximum phase
mixed phase
none