Grama Sachivalayam – Digital Assistant recruitment exam was held in 2019. The 2nd notification for Digital assistants posts was issued in January 2020. Following are questions and answers from the previous paper – 2019 of panchayat secretary – digital assistants. Candidates can avail more questions covering entire syllabus from our mock tests. See details below:
Digital Assistants Online Exams / Mock Tests
Previous Questions of Digital Assistants 2019:
A full binary tree with 2n+1 nodes contains
- n leaf nodes
- n non-leaf nodes
- n-1 leaf nodes
- n-1n non – leaf nodes
ANSWER: 1
The total number of different trees that are possible with six nodes is
- 64
- 4
- 58
- 12
ANSWER: 3
Convert the expression (AB) – (CD) / ((F+G) – H)) to equivalent prefix notation.
- -*AB / *CD – + FGH
- *-AB / *CD +- FGH
- –AB / CD – + FGH
- -*AB / *CD +- FGH
ANSWER: 1
The common method used to store a graph is
- digraph
- stack
- adjacency matrix
- linked list
ANSWER: 3
Consider the following program segment
i = 6720, j = 4
while (i%j) = = 0)
{
i = i / j ;
j = j + 1
}
On termination j will have the value
- 4
- 8
- 9
- 6720
ANSWER: 1
What will be the output of the following C code?
include main ( ) {
printf (“% . of”, 2.89);
}
- 2.890000
- 2.89
- 2
- 3
ANSWER: 2
Grama / Ward Sachivalayam Online Exams / Mock Tests for All posts – See Details
Which type of function among the following shows polymorphism?
- inline function
- virtual function
- undefined funcion
- class member functions
ANSWER: 4
Select emp_name from department where dept_name LIKE __ Computer Science; which one of the following has to be included in the blank to select the dept_name which has computer science as its ending string?
- %
- –
- ll
- $
ANSWER: 4
The number of attributes in a relation is called as its
- cardinality
- degree
- tuples
- entity
ANSWER: 4
Start and Stop bits are used in serial communication for
- Errod detection
- Error correction
- Synchronization
- Slowing down the communication
ANSWER: 3
How many IP addresses are available to a company with a class B address
- 8192
- 16384
- 32768
- 65536
ANSWER: 3
__ layer of OSI model is responsible for the process to process delivery of the entire message.
- data link layer
- network layer
- transport layer
- session layer
ANSWER: 4
A cathode ray tube converts
- voltage into current
- AC voltage into DC voltage
- DC voltage into AC voltage
- Electrical signals into visual signals
ANSWER: 2
Figure of merit of a receiver is given as
- (SNR)o / (SNR)i
- (SNR)i / (SNR)o
- (SNR)i (SNR)o
- None of the above
ANSWER: 3
Mixing is used in communication to
- raise the carrier frequency
- lower the carrier frequency
- alter the deviation
- change the carrier frequency to any required value
ANSWER: 1
What device is used to demodulate a time division multiplexed analog wave?
- high pass filter
- low pass filter
- band stop filter
- band pass filter
ANSWER: 4
Which of the following is not an advantage of digital modulation?
- greater noise immunity
- greater security
- easier multiplexing
- less band width requirement
ANSWER: 1
The most commonly used connections for power systems as step up and step down transformers are
- star – delta, star – star
- delta – star, star – delta
- star – star, delta – delta
- star – delta, delta – star
ANSWER: 3
In general daily applications, the electrical fan operates with a —— inductor motor.
- single phase
- two phase
- three phase
- poly phase
ANSWER: 1
Synchronous motors are generally not self starting as
- the direction of rotation is not fixed
- the direction of instantaneous torque reverses after half cycle
- the starters cannot be used on these machines
- starting winding is not provided on these machines
ANSWER: 4