WorksheetsECE132-WTP1
Total questions: 25
Worksheet time: 48mins
For the given circuit , which statement is true?
Where RA & RB are input resistances.
Both resistances are equal
Both input resistances have zero value
RA is less than RB
RB= RA /(1+RA)
For the given circuit what will the output voltage if all the sources are ideal
10V
20V
30V
40V
Applying KCL and KVL, ________ and ________ of various circuits are calculated.
current, frequency
current, voltage
resistance, current
resistance, voltage
The method of Kirchhoff’s law is used to solve the questions with _____.
branch current method
node voltage method
loop/mesh current method
all are correct
The algebraic sum of all the voltages and current in a closed loop is equal to
0
1
Infinity
None of the mentioned
A transformer with Na =500 , Nb=10. What is the value of secondary voltage if Va = 120V.
1V
2V
2.4V
5V
A transformer with Na =500 , Nb=10. What is the value of secondary voltage if Va = 120V. Calculate Ia and Ib if load resistance is 15ohms.
0.2mA and 0.16mA
3.2mA and 0.16A
3.2mA and 0.16mA
None of the above
If VA = 440V, VB=220V what is the Turn ratio of the transformer.
1
1/2
2/1
0
The frictional loss in a transformer is
0%
10%
50%
>50%
The %age current drawn by the transformer at no load
0.2 - 0.5 %
2 - 5 %
12 - 15 %
20 - 30 %
Calculate RTH across AB terminal for given figure
1.6 Ω
2.6 Ω
3.6 Ω
4.6 Ω
Calculate RN for Given circuit
10 Ω
12 Ω
14 Ω
16 Ω
Determine Thevenin’s equivalent voltage for the given circuit
3.3 V
4.4 V
5.5 V
6.6 V
While obtaining RTH All the ideal Current sources are
Short Circuit
Open Circuit
Either Short or Open Circuit
None of the mentioned
Incandescent lights voltage rating lies in
1.5-300V
1.5-100V
40-220V
100-440V
Filament in Incandescent bulb is made up of
tantalum
carbon
osmium
tungsten
Which instrument/device is useful for the measurement of intensity of light.
Heliometer
Load Cell
Luxmeter
Inkometer
The suitable lamps for street lighting are
Mercury vapour lamps
Sodium discharge lamps
LED lights
All of the mentioned.
Luminance of a proper day light is approximately equals to
100 lux
200 lux
300 lux
400 lux
What is the difference between a CFL and an LED lamp?
1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material.
2. The average life span of a CFL is much longer than that of an LED lamp
3. A CFL is less energy-efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
1 only
1 and 2
1 and 3
None of the mentioned
Full form of CFL
Combustible fluoride lamp
Compact fluoride lamp
Compact fluorescent lamp
Combustible fluorescent lamp
The main reason for forward current during forward biasing of a diode is
displacement current
drift current
drift or diffusion current
diffusion current
During reverse bias, diode reverse saturation current is due to
displacement current
drift current
drift or diffusion current
diffusion current
When +ve terminal of battery is connected to cathode junction of diode.
Barrier will remain same
Barrier will increase
Barrier will decrease
None of the mentioned.
What will be the output of the following circuit? (Assume 0.7V drop across the diode)
12V
12.7V
11.3V
0V
