Hi students, Welcome to **Amans Maths Blogs (AMBIPi)**. Are you preparing for **SSC Scientific Assistant** and looking for * SSC Scientific Assistant IMD Electronics Questions 121 to 140 with Answer Keys*? In this article, you will get previous year questions of SSC Scientific Assistant IMD (Indian Meteorological Department), which helps you in the preparation of government job of SSC IMD Scientific assistant.

## SSC Scientific Assistant IMD Previous Year Questions

**Scientific Assistant IMD Electronics Question No: 121**

What is taken as reference vector in the analysis of parallel RC circuits ?

**Option A** : I

**Option B** : R

**Option C** : V

**Option D** : XC

**Show/Hide Answer Key**

**Option C : V**

**SSC Scientific Assistant IMD Electronics Question No: 122**

The power measured in VAR is ______

**Option A** : active power

**Option B** : apparent power

**Option C** : impedance power

**Option D** : reactive power

**Show/Hide Answer Key**

**Option D : reactive power**

**SSC Scientific Assistant IMD Electronics Question No: 123**

What is true power of a parallel RL circuit connected to an AC voltage source of 60 V with a resistance of 20 ohms and an inductive reactance of 1600 ohms ?

**Option A** : 160 W

**Option B** : 180 W

**Option C** : 200 W

**Option D** : 220 W

**Show/Hide Answer Key**

**Option B : 180 W**

**SSC Scientific Assistant IMD Electronics Question No: 124**

What is the impedance (in ohms) of the series RLC circuit having R = 50 ohms, L = 0.32 H and C – 10 µF operating at 50 Hz?

**Option A** : 100.53

**Option B** : 217.78

**Option C** : 223.45

**Option D** : 318.31

**Show/Hide Answer Key**

**Option C : 223.45**

**SSC Scientific Assistant IMD Electronics Question Paper No: 125**

What value of capacitance in (µF) must be connected in a series RL circuit having L = 0.32 H and R = 50 ohms, to obtain purely resistive circuit ?

**Option A** : 0.0317

**Option B** : 0.317

**Option C** : 3.17

**Option D** : 32

**Show/Hide Answer Key**

**Option B : 0.317**

**SSC Scientific Assistant IMD Electronics Question No: 126**

In a series RL circuit , the inductive reactance in XL = 50 ohms and inductance of 0.16 H. What is the frequency of supply ?

**Option A** : 20 Hz

**Option B** : 25 Hz

**Option C** : 50 Hz

**Option D** : 60 Hz

**Show/Hide Answer Key**

**Option C : 50 Hz**

**SSC Scientific Assistant IMD Electronics Question No: 127**

A series RLC circuit has a resistance of 2 k -ohms, inductance of 0.05 H and capacitance of 10 µF. What is the bandwidth (in kHz) of the circuit ?

**Option A** : 5.86

**Option B** : 6

**Option C** : 6.36

**Option D** : 7

**Show/Hide Answer Key**

**Option C : 6.36**

**Scientific Assistant IMD Electronics Paper No: 128**

A series RLC circuit has a resistance of 80 ohms, inductance of 1.25 ohms and capacitance of 5 µF. What is the quality factor of the circuit ?

**Option A** : 5.25

**Option B** : 5.5

**Option C** : 5.75

**Option D** : 6.25

**Show/Hide Answer Key**

**Option D : 6.25**

**IMD Scientific Assistant IMD Electronics Question Paper No: 129**

What is the value of the neutral current in a 3-phase balanced star system ?

**Option A** : 0.333 of phase current

**Option B** : 0.666 of phase current

**Option C** : 0.707 of phase current

**Option D** : Zero

**Show/Hide Answer Key**

**Option D : Zero**

**Previous Year Question Scientific Assistant IMD Electronics : 130**

Which range is bounded by the Central Highlands on the south and the Aravalis on the northwest??

**Option A** : Vindhya

**Option B** : Karakoram

**Option C** : Shevaroy

**Option D** : Satpura

**Show/Hide Answer Key**

**Option A : Vindhya**

**Scientific Assistant IMD Electronics Question No: 131**

What is the value of the line voltage (in kV) of a three phase star connected system having a phase voltage of 3.3 kV?

**Option A** : 1.1

**Option B** : 2.1

**Option C** : 3.3

**Option D** : 5.7

**Show/Hide Answer Key**

**Option D : 5.7**

**Scientific Assistant IMD Electronics Question No: 132**

What is the value of per phase resistance ( in ohms ) in a star connection ,if the equivalent delta connection has per phase resistance of a 90 ohms ?

**Option A** : 30

**Option B** : 45

**Option C** : 60

**Option D** : 75

**Show/Hide Answer Key**

**Option A : 30**

**SSC Scientific Scientific Assistant IMD Electronics Question No: 133**

What is the value of line voltage (in kV) of a 3-phase delta connected system having a phase voltage of 3.3 kV ?

**Option A** : 1.1

**Option B** : 2.1

**Option C** : 3.3

**Option D** : 5.7

**Show/Hide Answer Key**

**Option C : 3.3**

**Scientific Assistant IMD Electronics Question No: 134**

The condition of resonance arise when ______?

**Option A** : resistance is equal to inductive resistance

**Option B** : resistance is equal to capacitive resistance

**Option C** : resistance is equal to impedance

**Option D** : capacitive resistance is equal to impedance

**Show/Hide Answer Key**

**Option C : resistance is equal to impedance**

**Scientific Assistant IMD Electronics Question Paper No: 135**

To increase the resonant frequency of a parallel RLC circuit , the capacitance must be the ______

**Option A** : decreased

**Option B** : increased

**Option C** : replaced with impedance

**Option D** : replaced with resistance

**Show/Hide Answer Key**

**Option A : decreased**

**Scientific Assistant IMD Electronics Question No: 136**

What is the Boolean expression for a 4-input AND gate ?

**Option A** : X = A + BCD

**Option B** : X = AB + CD

**Option C** : X = ABC + D

**Option D** : X = ABCD

**Show/Hide Answer Key**

**Option D : X = ABCD**

**Scientific Assistant IMD Electronics Question No: 137**

For all possible input combinations , the exact reverse output of OR gate can be obtained by ______ gate ?

**Option A** : EX – NOR

**Option B** : EX-OR

**Option C** : NOR

**Option D** : NOT

**Show/Hide Answer Key**

**Option C : NOR**

**Scientific Assistant IMD Electronics Paper No: 138**

What is the number of clock pulses required to completely load and than unload a 4-bit register ?

**Option A** : 4

**Option B** : 7

**Option C** : 16

**Option D** : 32

**Show/Hide Answer Key**

**Option B : 7**

**Scientific Assistant IMD Electronics Paper No: 139**

If the input resistor of 100 k- ohms of a binary weighted DAC is connected to a 3 V supply , than what will be the current flowing through the resistor ?

**Option A** : 30 µA

**Option B** : 300 µA

**Option C** : 3 mA

**Option D** : 30 mA

**Show/Hide Answer Key**

**Option A : 30 µA**

**Previous Year Question Scientific Assistant IMD Electronics : 140**

What is the resolution of a 0- 5 V 8-bit DAC ?

**Option A** : 0.0019

**Option B** : 0.0039

**Option C** : 0.0078

**Option D** : 0.0156

**Show/Hide Answer Key**

**Option B : 0.039**

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